Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hang vai » hang va, hang tai, hang hai
qua than » qua thanh, qua phan, qua tan
tang ha » lang ha, tang ma, trung ha
cua tre » cua te, cuu tre, dua tren
soc ban » coc ban, so ban, soc ba
ky tang » ky nang, ky dang, kho tang
hoc ban » hoc bang, hoc dan, hoc bai
te cac » tu cac, ve cac, te cao
ha hoi » hoa hoi, ha noi, xa hoi

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: te cac ky tang ha hoi. hieu qua than ((soc ban) OR (hoc ban)) hang vai ((cua tre) OR (cua triet))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cac ky tang ha hoi. hieu qua than ((soc ban) OR (hoc ban)) hang vai ((cua tre) or (cua triet))~".
• Adding a wildcard symbol may retrieve word variants: te cac ky tang ha hoi. hieu qua than ((soc ban) OR (hoc ban)) hang vai ((cua tre) or (cua triet))*.