Topic title should not be short, but not very long. Six (6) words must have a title to be easily memorized. Scientifical studies have established that a man remembers the first three and last three words in any way. Search engines ignore connecting words and most of abbreviations and the remaining together must have a certain length. It is recommended that the title contains between 5 and 6 words that describe the content and be reflected in the text on the page. An ideal length of the title is 55-60 characters, including spaces and punctuation. If the title is too long, search engines displays only a portion of the title in search results pages.
For me as admin and for moderators to, search titles only help us find topics with similar titles / duplicate titles. In IPS4 I can not find topics with duplicate titles, at least I can not find topics that contain a certain keyword, because I get results that do not contain the keyword în titles.