Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
su dang » su dung
nang xa » nang x, lang xa, nang ma
van cau » van dau, van hau, van chat
cua tre » cuu tre, cua triet, dua tren
dang y » dang xay
y nang » ky nang, ly nang, v nang
loc va » hoc va, luc va
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: su dang y nang xa hoi. hieu van cau ((loc va) or (tuc xa)) hanh vi ((cua te) or (cua tre))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su dang y nang xa hoi. hieu van cau ((loc va) OR (tuc xa)) hanh vi ((cua te) OR (cua tre)).
• Adding a wildcard symbol may retrieve word variants: su dang y nang xa hoi. hieu van cau ((loc va) or (tuc xa)) hanh vi ((cua te) or (cua tre))*.