A couple notes:
* As colucix mentioned, the search you gave as an example returns no results.
* The LQ search supports all standard BOOLEAN operators, so is fairly flexible.
* The default operator is AND
* Keep in mind that the next release of LQ will bring an entirely new and much improved search (based on the Open Source Sphinx project). The search at http://www.androidquestions.org/
can be used as a reference.