Perhaps you should try some spelling variations:
thanh vi » hanh vi, thanh va, thanh ve
qua tham » qua cham, qua than, qua thanh
hoc ban » hoc bang, hoc dan, hoc bai
soc ban » coc ban, so ban, soc ba
cua tre » cua te, cuu tre, cua triet
tang ha » lang ha, tang ma, trung ha
ky tang » ky nang, ky dang, kho tang
ha hoi » hoa hoi, ha noi, xa hoi
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 cao) OR (te bao)) ky tang ha hoi. hieu qua tham ((soc ban) or (hoc ban)) thanh vi cua tre~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te cao) OR (te bao)) ky tang ha hoi. hieu qua tham ((soc ban) OR (hoc ban)) thanh vi cua tre*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((te cao) OR (te bao)) ky tang ha hoi. hieu qua tham ((soc ban) or (hoc ban)) thanh vi cua tre*".