Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh hai » thanh phan, thanh hoa, thanh san
hanh lai » hanh lam, hanh tai, thanh lap
hieu van » hieu va, thien van, lieu va
tu sach » thu sach, su sach, te sach
van hac » van hoc, van ha, van hai
lang xa » lang ha, dang xay, lang van
nang xa » nang x, nang ma, mang xa
hac xuc » chat xuc
xuc va » duc va, tuc va, luc va

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach y ((nang xa) or (lang xa)) hoi. hieu van hac xuc va ((hanh lai) or (thanh hai)) cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach y ((nang xa) OR (lang xa)) hoi. hieu van hac xuc va ((hanh lai) OR (thanh hai)) cua triet.
• Adding a wildcard symbol may retrieve word variants: tu sach y ((nang xa) or (lang xa)) hoi. hieu van hac xuc va ((hanh lai) or (thanh hai)) cua triet*.