Advanced Search misses some results?

[digismile]

Since the recent change to the dgrin challenge threads, I have been using Advanced Search to search for entries using something like "Challenge 21" (using the double quotes) and searching The dgrin photo challenges. I tested the search the first day or so and it seemed to work fine (small number of entries at that time).

Today I noticed that not all threads are being returned from the search. If you perform the above search it returns 17 results, but misses threads with titles such as:

ineligible .. dgrin challenge 21 - after sundown
*Challenge 21 - Kingsington
*Challenge 21: 'Haulover Pier'

just to mention a few. Am I doing something wrong or is the search not working properly?

Thanks,
Brad

[Baldy]

Turns out the search engine only looks for words that are at least 4 characters long. Otherwise, search gets too resource-intensive as the site grows. So it is discarding the search term 21.

Also, it only returns a certain number of results. Can't remember what it is, but if you have too many results it discards any over ___ (150?).

Thanks,
Baldy