When searching on pathofexile.com/trade, this addon inserts the tilde(~) before your search query. This enables fuzzy search, so you can be more lenient with your search. Start you search with a space (" ") to not use fuzzy search for this query. For example, when searching for "#% to Fire and Cold Resistance" it's enough to just write "cold fire res". Without fuzzy search, this would not find the modifier.