Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
thanh vi » hanh vi, thanh va, thanh ve
tang hoa » hang hoa, tang ha, tang ho
qua tham » qua cham, qua than, qua thanh
hoa hoi » khoa hoi, hoa hoc, hoa doi
soc ban » coc ban, so ban, soc ba
ky tang » ky nang, ky dang, kho tang
cua tre » cua te, cuu tre, dua tren
hoc ban » hoc bang, hoc dan, hoc bai
te cao » te bao

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 ky tang hoa hoi. hieu qua tham ((soc ban) or (hoc ban)) thanh vi ((cua tre) OR (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cao ky tang hoa hoi. hieu qua tham ((soc ban) OR (hoc ban)) thanh vi ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cao ky tang hoa hoi. hieu qua tham ((soc ban) or (hoc ban)) thanh vi ((cua tre) OR (cua triet))*".