Perhaps you should try some spelling variations:
qua cham » qua hai, qua cac, va cham
ban hanh » ban hang
dang xay » dang van, van xay
soc ban » hoc ban, coc ban, so ban
vu kham » vu khanh
sach ty » sach tu, sach thu, xach tay
xay hoi » xa hoi, tay hoi, cay phoi
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: te ((sach ty) or (sach y)) dang xay hoi. hieu ((qua cham) or (vu kham)) soc ban hanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te ((sach ty) OR (sach y)) dang xay hoi. hieu ((qua cham) OR (vu kham)) soc ban hanh vi cua tre.
• Adding a wildcard symbol may retrieve word variants: te ((sach ty) or (sach y)) dang xay hoi. hieu ((qua cham) or (vu kham)) soc ban hanh vi cua tre*.