Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
doan van » doan va, hoang van, luan van
nang xa » nang x, lang xa, nang ma
van hac » van hoc, van ha, van hai
cua tre » cuu tre, cua triet, dua tren
te cac » tu cac, ve cac, te cao
tu vay » tu va, tu van, tu cay
tuc va » thuc va, truc va, tuc xa
cua te » cua tu

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: te cac ky nang xa hoi. hieu van hac ((tu vay) OR (tuc va)) doan van ((cua tre) OR (cua te))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cac ky nang xa hoi. hieu van hac ((tu vay) or (tuc va)) doan van ((cua tre) OR (cua te))~".
• Adding a wildcard symbol may retrieve word variants: te cac ky nang xa hoi. hieu van hac ((tu vay) or (tuc va)) doan van ((cua tre) OR (cua te))*.