Perhaps you should try some spelling variations:
ve triet » va trien, su triet
sach ky » sac ky, sach y, sach ty
dinh ve » dinh van
thuc va » thuc vat, thuc dan, thuc day
te sach » toc sach
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
ve cam » ve cham, ve cac, va cam
ma hoi » mai hoi, xa hoi, ma hoa
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: te sach ky tang ma hoi. hieu ve cam ((xuc va) or (thuc va)) ((dinh ve) or (dinh ket)) ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sach ky tang ma hoi. hieu ve cam ((xuc va) OR (thuc va)) ((dinh ve) OR (dinh ket)) ve triet.
• Adding a wildcard symbol may retrieve word variants: te sach ky tang ma hoi. hieu ve cam ((xuc va) or (thuc va)) ((dinh ve) or (dinh ket)) ve triet*.