Today we've released a couple of improvements to the way that search works in the Steam Workshop. With this update, when you search within a game's Workshop, the results will now handle partial string matches and will organize the results to prioritize the most relevant results, taking into account popularity and user ratings. More @Wikipedia
Hover over any link to get a description of the article. Please note that search keywords are sometimes hidden within the full article and don't appear in the description or title.