Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh tai » thanh tai, hang tai, han tai
ve triet » va trien, su triet
te sach » toc sach
sach ty » sach y, sach tu, sach thu
nang xa » nang x, nang ma, mang xa
lang xa » lang ha, dang xay, lang van
van hac » van hoc, van ha, van hai
hac duc » hoc duc, ha duc, thach duc
va hanh » van hanh, va thanh, va danh
tai ve » tai va, tai he, tai le

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

• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((nang xa) OR (lang xa)) hoi. hieu van hac duc va hanh tai ve triet~.
• Adding a wildcard symbol may retrieve word variants: te sach ty ((nang xa) or (lang xa)) hoi. hieu van hac duc va hanh tai ve triet*.