Sorry, not really sure the right forum section to put this in! ;c)
In the features list it says:
"search through all words in a book of the Bible for a certain word or phrase"
My brief experience with openlp.org (just downloaded RC3) is that one can only enter passage references, not verse content searches. The documentation seems to say that as well, but the feature list quote gives me that tantalizing idea that I can actually do full-text searches of the Bible.
If I can, please let me know how, if not please consider this a feature request (and you might want to change the feature list page as well).