Perhaps you should try some spelling variations:
tan thanh » tran thanh, tang thanh, toan thanh
thanh vi » hanh vi, thanh va, thanh ve
cham duc » pham duc, cham soc, pham duy
hieu ve » hieu va, hieu van
ky tang » ky nang, ky dang, kho tang
cua tre » cuu tre, cua triet, dua tren
ve cham » va cham, ve chat, vu cham
tu ban » thu ban, te ban
ban ky » van ky, dan ky
ma hoi » mai hoi, ma hoa, me hoi
cua te » cua tu

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

• Performing a fuzzy search may retrieve terms with similar spellings: tu ban ky tang ((ma hoi) OR (xa hoi)). hieu ve cham duc tan thanh vi ((cua tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tu ban ky tang ((ma hoi) OR (xa hoi)). hieu ve cham duc tan thanh vi ((cua tre) OR (cua te)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "tu ban ky tang ((ma hoi) OR (xa hoi)). hieu ve cham duc tan thanh vi ((cua tre) or (cua te))".
• Adding a wildcard symbol may retrieve word variants: tu ban ky tang ((ma hoi) OR (xa hoi)). hieu ve cham duc tan thanh vi ((cua tre) or (cua te))*.