The Open Object Documentation is very big and the default search facilities offered by Sphinx displays a lot of pages in sections you probably do not need.
For example, if you search for the account word in the documentation, you will get 373 results (out of 389) dispatched like this:
- Module Index: 228
- Community Book :4
- Open ERP Book: 81
- Installation Manuals: 3
- Business Intelligence: 0
- Open ERP Features: 34
- Developer Book: 23
But most of the time, you probably wanted to search in one or two specific sections.
This is now a possibility with the new search option list:

You can choose one or several sections and Sphinx will only search in these sections.
By default, Sphinx will search in all sections.