Perhaps you should try some spelling variations:
ban thanh » ban hang
va triet » va thiet, va trien, ve triet
ban hanh » ban hang
thai va » thai van
su cach » su sach, tu cach, cuu cach
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va, hieu van
cam duc » cam xuc, cao duc, pham duc
su cac » tu cac, su cao, su can
ve cam » ve cham, ve cac, va cam

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su cac) or (su cach)) ky tang xa hoi. hieu ve cam duc ((ban thanh) or (ban hanh)) thai va triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su cac) OR (su cach)) ky tang xa hoi. hieu ve cam duc ((ban thanh) OR (ban hanh)) thai va triet.
• Adding a wildcard symbol may retrieve word variants: ((su cac) or (su cach)) ky tang xa hoi. hieu ve cam duc ((ban thanh) or (ban hanh)) thai va triet*.