# Select Object Types in Advanced Search If you do not know the specific object type of the record(s) you are looking for, select the **All Object Types** option. {% hint style="warning" %} IMPORTANT: make sure that the object types you want to search are activated in the Sources menu, Accessed via the button, 'Choose a Data Set'. Otherwise, they will not be searchable in 'Advanced Search.' {% endhint %} Selecting All Object Types allows you to search all of the Object Types you have selected in the Sources menu: If you already know the [CensusID](/the-census-database-overview/censusids.md) of the object you are looking for, you can enter it in the corresponding search field. If you want to search for only one Object Type, you can select it in the drop-down menu. --- # Agent Instructions: 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: ``` GET https://docs.census.de/navigating-and-searching/examples-of-typical-searches/search-functions/advanced-search/select-object-types-in-advanced-search.md?ask= ``` The question should be specific, self-contained, and written in natural language. 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.