Perhaps you should try some spelling variations:
hieu quan » lieu quan, thien quan, lien quan
luc tuan » luc luan, luc quan, luu tuan
nang xa » nang x, lang xa, nang ma
cam luc » cam xuc, cau luc
cua tre » cua te, cua triet, dua tren
cuu tre » cau tren, cau treo
sinh 2 » sinh y
2 nang » v nang
anh va » hanh va

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: hoc sinh 2 nang xa hoi. ((hieu qua) OR (hieu quan)) cam luc tuan anh va ((cua tre) OR (cuu tre))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc sinh 2 nang xa hoi. ((hieu qua) or (hieu quan)) cam luc tuan anh va ((cua tre) OR (cuu tre))~".
• Adding a wildcard symbol may retrieve word variants: hoc sinh 2 nang xa hoi. ((hieu qua) or (hieu quan)) cam luc tuan anh va ((cua tre) OR (cuu tre))*.