The original specific description is below, but the required solution is much more general: we would need to find a way to upgrade the HebMorph dictionary to a newer version of Hspell and/or be able to add custom entries to the dictionary.
In the Hebrew language the prepositions and the conjunctions are usually prefixed to the beginning of the word. For example, "טריפלקס" means "triplex" and "וטריפלקס" means "and triplex". The letter "ו" was added in the beginning.
Ideally, the search engine should be smart enough to know about morphology and understand that "טריפלקס" should also yield results with "וטריפלקס".
The situation with Arabic is very similar, and possibly there are more such languages.