Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
danh tai » doanh tai, dinh tai, hanh tai
su triet » su viet, su tien, ve triet
te sach » toc sach
sach ty » sach y, sach tu, sach thu
nang ma » tang ma, sang ma, nang cao
lang xa » lang ha, dang xay, lang van
van hac » van hoc, van ha, van hai
hac xuc » chat xuc
va danh » va dinh, va dan, va hanh
xuc va » duc va, tuc va, luc va
tai su » tai so, tai tu, lai su

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

• Performing a fuzzy search may retrieve terms with similar spellings: te sach ty ((nang ma) or (lang xa)) hoi. hieu van hac xuc va danh tai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ty ((nang ma) OR (lang xa)) hoi. hieu van hac xuc va danh tai su triet.
• Adding a wildcard symbol may retrieve word variants: te sach ty ((nang ma) or (lang xa)) hoi. hieu van hac xuc va danh tai su triet*.