Type your search using roman letters (English).
For example to search for the word "book" in your language:
If you pick
Arabic, type kitaab.
Korean, type chaek.
Russian, type kniga.
Tamil, type nool
The system will transliterate appropriately as you type,
to
ﻛِﺘَﺎﺐ or 책
or книга or நூல்.
Selecting a language will provide more specific instructions.