Perhaps you should try some spelling variations:
hieu van » thien van, lieu va, hieu ve
tu cach » tu cac
te sach » toc sach
nang xa » nang x, lang xa, nang ma
hieu va » lieu va, hieu qua
cam tuc » cam xuc, cam tu, nam thuc
va hanh » van hanh, va thanh, va danh
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 (te sach)) ky nang xa hoi. ((hieu van) 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 (te sach)) ky nang xa hoi. ((hieu van) OR (hieu va)) cam tuc va hanh vi cua te.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (te sach)) ky nang xa hoi. ((hieu van) or (hieu va)) cam tuc va hanh vi cua te*.