Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
hanh tai » thanh tai, hang tai, hinh tai
cua tre » cua te, cuu tre, cua triet
nang xa » nang x, lang xa, nang ma
van hac » van hoc, van ha, van hai
han tai » hang tai, nhan tai, van tai
truc va » thuc va, thuc vat, trung va
su sac » su sach, su cac, su xac
sac ky » cac ky, sai ky
tuc va » thuc va, tuc xa, duc 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: su sac ky nang xa hoi. hieu van hac ((tuc va) OR (truc va)) ((hanh tai) OR (han tai)) cua tre~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sac ky nang xa hoi. hieu van hac ((tuc va) or (truc va)) ((hanh tai) OR (han tai)) cua tre~".
• Adding a wildcard symbol may retrieve word variants: su sac ky nang xa hoi. hieu van hac ((tuc va) or (truc va)) ((hanh tai) OR (han tai)) cua tre*.