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Occasionally someone posts about their search problems, but what about all the others who try a search, don't get results, and start a new thread for the same subject covered numerous times in the past? I bet the majority of new users do that, but you can't blame them. They aren't aware of the limitations and haven't been taught any search tricks -- which boils down to one short text phrase. The more you type the less likely you'll locate what you are looking for.
I have posted this before but let's say you are looking to winterize your T@B. The best search phrase to locate relevant articles would be "winteriz" (no quotes). That will list articles with winterize, winterized, or winterizing in the title or comments. Typing in winterized would miss articles containing winterizing. Typing in "how do I winterize my T@B?" will produce bupkis.
Basically the forum doesn't support natural language full-text queries, AND logic, plural or variations on words, or logical filters. So it needs to be obvious to KEEP IT SHORT AND SIMPLE. Here are my suggestions on how to do that: http://tab-rv.vanillaforums.com/discussion/comment/64382#Comment_64382