Perhaps you should try some spelling variations:
nhieu vien » nhieu viec, nhiet dien, thieu nien
trinh vat » trinh van, trinh luat, sinh vat
vien nam » viet nam, vien dai, van nam
cua tre » cuu tre, cua triet, dua tren
xuc lap » tuc lap, truc lap
nam xuc » cam xuc, nam xua, nam thuc
tu sach » thu sach, te sach, tu cach
lang xa » lang ha, dang xay, lang van
ky lang » ky nang, ky dang, ky tang
su sach » so sach, vu sach
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 sach) or (su sach)) ky lang xa hoi. nhieu vien nam xuc lap trinh vat ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky lang xa hoi. nhieu vien nam xuc lap trinh vat ((cua tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky lang xa hoi. nhieu vien nam xuc lap trinh vat ((cua tre) or (cua te))*.