Perhaps you should try some spelling variations:
van cham » van chat, van tham, va cham
hieu van » hieu va, thien van, lieu va
thanh vi » hanh vi, thanh va, thanh ve
hoc sach » hoc sinh, hoc cac, hoc anh
tu cach » tu cac
nang xa » nang x, lang xa, nang ma
cua tre » cua te, cuu tre, cua triet
tuc va » thuc va, truc va, duc va
vi cua » vai cua, di cua

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tu cach) or (hoc sach)) ky nang xa hoi. hieu van cham ((tuc va) or (tuc xa)) thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tu cach) OR (hoc sach)) ky nang xa hoi. hieu van cham ((tuc va) OR (tuc xa)) thanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: ((tu cach) or (hoc sach)) ky nang xa hoi. hieu van cham ((tuc va) or (tuc xa)) thanh vi cua tre*.