Perhaps you should try some spelling variations:
ve triet » va trien, su triet
hieu van » hieu va, thien van, lieu va
danh vi » hanh vi, dinh vi, danh di
va danh » va dinh, va dan, va hanh
cam tuc » cam xuc, cam tu, nam thuc
van cam » van nam, van lam, van cau
su sach » vu sach
tang ma » mang may, tang van
so sach » so sanh, bo sach, co sach
tuc va » thuc va, truc va, tuc xa
vi ve » va ve, gi ve, ve ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sach) OR (so sach)) ky ((tang ma) or (nang cao)) hoi. hieu van cam tuc va danh vi ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sach) OR (so sach)) ky ((tang ma) OR (nang cao)) hoi. hieu van cam tuc va danh vi ve triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sach) OR (so sach)) ky ((tang ma) or (nang cao)) hoi. hieu van cam tuc va danh vi ve triet*".