Perhaps you should try some spelling variations:
thanh dai » thanh hai, thanh tai, thanh dat
ban thanh » ban hanh, ban hang
cua triet » cua viet, su triet, va triet
ky tang » ky nang, ky dang, kho tang
tang ma » mang may, tang van
hieu ve » hieu va, hieu van
cam duc » cao duc, pham duc, nam duoc
su cac » su cao, su can, eu cac
ma hoi » mai hoi, xa hoi, ma hoa

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 (tu cac)) ky tang ma hoi. hieu ve ((cam duc) or (cam xuc)) ban thanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su cac) OR (tu cac)) ky tang ma hoi. hieu ve ((cam duc) OR (cam xuc)) ban thanh dai cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su cac) OR (tu cac)) ky tang ma hoi. hieu ve ((cam duc) or (cam xuc)) ban thanh dai cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su cac) OR (tu cac)) ky tang ma hoi. hieu ve ((cam duc) or (cam xuc)) ban thanh dai cua triet*.