Perhaps you should try some spelling variations:
tu cach » tu cac
va hanh » van hanh, va thanh, va danh
cam tuc » cam xuc, cam tu, nam thuc
hieu va » lieu va, hieu qua
hieu ve » hieu van
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
su sach » so sach, vu sach
ma hoi » mai hoi, xa hoi, ma hoa
tuc va » thuc va, truc va, tuc xa
vi cua » vai cua, di cua
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (su sach)) ky tang ma hoi. ((hieu ve) or (hieu va)) cam tuc va hanh vi cua te~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (su sach)) ky tang ma hoi. ((hieu ve) OR (hieu va)) cam tuc va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (su sach)) ky tang ma hoi. ((hieu ve) or (hieu va)) cam tuc va hanh vi cua te*.