> For the complete documentation index, see [llms.txt](https://chembl.gitbook.io/surechembl/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://chembl.gitbook.io/surechembl/text-search/search-interface-overview.md). # Search interface overview When you access the SureChEMBL landing page, the search interface is displayed. It enables you to perform various types of searches.
| Element | Description | | ------------------------------------ | ----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | | Query field |

A freestyle search field for performing either a simple text search or a more complex Solr query search.

Note: See Solr query fields and examples for more details on the Solr query fields

| | All chemically annotated authorities | A filter for selecting all or only the relevant chemically annotated patent authorities among US Applications, US Granted, EP Applications, EP Granted, JP, WO, CN | | Patents with small molecules | An in-house filter based on the work of [Falaguera and Mestres](https://pubs.acs.org/doi/10.1021/acs.jcim.1c00151) | | Specify dates |

A mechanism for selecting documents based on the publication date.

Note: See Date filter for more details on how to restrain the patent search on a time period

| | Query assistant |

An component aiming to support users in writing queries.

Note: See Query assistant for more details.

| | Structure search |

Ketcher, a web-based chemical structure editor.

Note: See Chemical search for more details on the search by structure

| ***Simple text search*** * Provide the desired search text, and filtering. * Click on **Search**.\ The system returns quickly the search results.
--- # Agent Instructions This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com. ## Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter: ``` GET https://chembl.gitbook.io/surechembl/text-search/search-interface-overview.md?ask=&goal= ``` `ask` is the immediate question: it should be specific, self-contained, and written in natural language. `goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.