Perhaps you should try some spelling variations:
nhieu vien » nhieu viec, nhiet dien, thieu nien
trinh viet » ninh viet, trinh vat
viet cua » viec cua, viet ca, viet qua
va trinh » van trinh, va tinh, lap trinh
cac thuc » cach thuc, cac thu, can thuc
vien cac » vien bach, vien dai, vien da
thuc va » thuc vat, thuc dan, thuc day
cua tre » cua te, cuu tre, cua triet
sang ma » tang ma, nang ma, sang tao
tu ban » thu ban, te ban
tu dan » tuc dan, cu dan, tu can

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

• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu dan) OR (tu ban)) ky ((nang x) OR (sang ma)) hoi. nhieu vien cac thuc va trinh viet cua tre~.
• Adding a wildcard symbol may retrieve word variants: ((tu dan) or (tu ban)) ky ((nang x) or (sang ma)) hoi. nhieu vien cac thuc va trinh viet cua tre*.