Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
va thanh » gia thanh, ban thanh, va tinh
thanh ki » thanh kim, thanh ky, thanh ke
tu cach » tu cac
tu sach » thu sach, su sach, te sach
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
van cam » van nam, van lam, van cau
cam tuc » cam xuc, cam tu, nam thuc
su tien » su kien, su hien, tu tieng
tuc va » thuc va, truc va, tuc xa
ki su » ky su

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 (tu sach)) ky tang xa hoi. hieu van cam tuc va thanh ki su tien~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (tu sach)) ky tang xa hoi. hieu van cam tuc va thanh ki su tien.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (tu sach)) ky tang xa hoi. hieu van cam tuc va thanh ki su tien*.