multiple keyword search

I'm trying to search for post about booting from a USB stick but even though I put a plus sign before both "USB" and "booting" the results still show every post with either work rather than post containing both words.

From the advanced search page:

Place + in front of a word which must be found and - in front of a word which must not be found. Put a list of words separated by | into brackets if only one of the words must be found. Use * as a wildcard for partial matches.

From the advanced search page:

Place + in front of a word which must be found and - in front of a word which must not be found. Put a list of words separated by | into brackets if only one of the words must be found. Use * as a wildcard for partial matches.

I quess you didn't notice that I followd those instructions and they didn't work.
I put a plus sign before both "USB" and "booting"

The forum-search ignores words of three or less letters
viewtopic.php?f=25&t=7727