Perhaps you should try some spelling variations:
nhieu vien » nhieu viec, nhiet dien, thieu nien
trinh viet » ninh viet, trinh vat
vien nam » viet nam, vien dai, van nam
viet cua » viec cua, viet ca, viet qua
tu sach » thu sach, te sach, tu cach
su sach » so sach, vu sach
nang xa » nang x, lang xa, nang ma
nam tuc » nam thuc, nam truc, nam tu
tuc lap » truc lap, tuc tap, tu lap
cua tre » cua te, cuu tre, cua triet

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 nang xa hoi. nhieu vien nam tuc lap trinh viet cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu sach) OR (su sach)) ky nang xa hoi. nhieu vien nam tuc lap trinh viet cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu sach) or (su sach)) ky nang xa hoi. nhieu vien nam tuc lap trinh viet cua tre*.