Before I post my primary question, I must ask about some general issue about the "search" feature on this site (just because I failed to find the topic that interested me). As I cannot find any help on this:

0) Does this work at all? (I tried to find topics with some common words, like "attachment" and I couldn't see any reports on the search result, neither the forum topics seemed to be filtered)

1) Does this search based on titles only or does it look through the post content also?

2) Does this search using by default OR or AND operators between words (ie. finds any occurrence of any of the words or only the exact phrase)?

3) Can the logical operators of any kind be used (like quotation marks, -, .NOT. etc.?

Sorry if I've overlooked something,
crayfish