The forum search button function is one that is really cranky and not easily understood by newbies. Even a couple of ranked users are met with the same complications but, it’s really something you could play around with as it works in a number of ways.
Notably, there are two available search functions. One that utilizes the Google search engine for resources and one that is my localized in the forum. Depending on how you choose, the search button would be engaged. From unpopular responses to this function, a few users prefer utilizing the Google search engine function.
However, the localized search option relies completely on what is been posted on the forum in a some worth ambiguous way. It searches based on familiar words from your search and could generate several results. You could as well, narrow your search results down by applying filters such as, search by boards, by users, by words (senescence) and more of those.
It’s something you should play around with to get results.