Perhaps you should try some spelling variations:
nhien viet » nhin viet, nghiep viet, trien viet
nhieu viec » hieu viec
trinh do » trinh ky
va trinh » van trinh, va tinh, lap trinh
cam tuc » cam tu, nam thuc, dam thuc
sach ky » sac ky, sach y, sach ty
tu sach » thu sach, su sach, te sach
tang xa » trang xa, tang ma, lang xa
ky tang » ky nang, ky dang, kho tang
cua tre » cua te, cuu tre, cua triet
do cua » doi cua, co cua, de cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu sach ky tang xa hoi. ((nhieu viec) or (nhien viet)) ((cam tuc) or (cam xuc)) va trinh do cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu sach ky tang xa hoi. ((nhieu viec) OR (nhien viet)) ((cam tuc) OR (cam xuc)) va trinh do cua tre.
• Adding a wildcard symbol may retrieve word variants: tu sach ky tang xa hoi. ((nhieu viec) or (nhien viet)) ((cam tuc) or (cam xuc)) va trinh do cua tre*.