Using version 0.27.0 NZB search.
If your search returns a lot of hits, you can narrow down by using +/- search. However, if the original search has over 250 hits, you can only narrow your search within these 250. This may sound like a lot but it depends on what your search criteria are.
Example - searching for Simpsons episodes from series 19
Search - simpsons (returns 250 hits - maximum allowed)
+s19 (14 hits)
Search - simpsons s19 (returns approx 72 hits)
So depending on how you search, the results will vary greatly. Is there a reason why the hits were limited to 250 ?
Regards
NC