Perhaps you should try some spelling variations:
tan hanh » tan thanh, tang hanh, toan hanh
thu ban » thu hang
cam duc » cam xuc, cao duc, pham duc
ky tang » ky nang, ky dang, kho tang
tang ma » mang may, tang van
cuu tre » cua tre, cau tren, cau treo
hieu ve » hieu van
hieu va » lieu va, hieu qua
ban ky » van ky, dan ky
ma hoi » mai hoi, xa hoi, ma hoa
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: thu ban ky tang ma hoi. ((hieu ve) or (hieu va)) cam duc tan hanh vi ((cuu tre) or (cua te))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: thu ban ky tang ma hoi. ((hieu ve) OR (hieu va)) cam duc tan hanh vi ((cuu tre) OR (cua te)).
• Adding a wildcard symbol may retrieve word variants: thu ban ky tang ma hoi. ((hieu ve) or (hieu va)) cam duc tan hanh vi ((cuu tre) or (cua te))*.