Perhaps you should try some spelling variations:
hieu van » hieu va, thien van, lieu va
tu cach » tu cac
cach tu » cach thuc
tu nang » tru nang, tu nong, tu nano
nang xa » nang x, lang xa, nang ma
van cam » van nam, van lam, van cau
luc van » luoc van, luu van, duc van
cua tre » cua te, cuu tre, cua triet
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 tu nang xa hoi. hieu van cam ((luc van) or (duc tan)) hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu cach tu nang xa hoi. hieu van cam ((luc van) OR (duc tan)) hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: tu cach tu nang xa hoi. hieu van cam ((luc van) or (duc tan)) hanh vi cua tre*.