Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
qua tham » qua cham, qua than, qua thanh
tham soc » cham soc, tham nuoc, thai son
ban hanh » ban hang
ky tang » ky nang, ky dang, kho tang
hoa hoi » khoa hoi, hoa doi, hoc hoi
soc ban » hoc ban, coc ban, so ban
hanh di » hanh vi, hanh de, hang di
cua tre » cua te, cuu tre, dua tren
te cac » tu cac, ve cac, te cao

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: te cac ky tang ((hoa hoi) OR (hoa hoc)). hieu qua tham soc ban hanh di ((cua tre) or (cua triet))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te cac ky tang ((hoa hoi) OR (hoa hoc)). hieu qua tham soc ban hanh di ((cua tre) OR (cua triet))*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "te cac ky tang ((hoa hoi) OR (hoa hoc)). hieu qua tham soc ban hanh di ((cua tre) or (cua triet))*".