Perhaps you should try some spelling variations:
nhieu viec » hieu viec, nhien viet
trinh vi » trinh va, trinh ve, trinh viet
va trinh » van trinh, va tinh, lap trinh
cac thuc » cach thuc, can thuc, cay thuc
cac thu » cach thuc, cac thoi
cua tre » cua te, cuu tre, cua triet
sang ma » tang ma, nang ma, sang tao
nang xa » nang x, lang xa, nang ma
dan ky » van ky
vi cua » vai cua, di cua
tu dan » tuc dan, tu ban, cu dan

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 ky ((nang xa) OR (sang ma)) hoi. nhieu viec ((cac thuc) OR (cac thu)) va trinh vi cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu dan ky ((nang xa) or (sang ma)) hoi. nhieu viec ((cac thuc) OR (cac thu)) va trinh vi cua tre~".
• Adding a wildcard symbol may retrieve word variants: tu dan ky ((nang xa) or (sang ma)) hoi. nhieu viec ((cac thuc) OR (cac thu)) va trinh vi cua tre*.