Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
hanh dai » hanh tai, hanh dao, vanh dai
cam thuc » am thuc, nam thuc, can thuc
va hanh » van hanh, va thanh, va danh
cam thu » nam thu, cac thu, ca thu
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
te bai » te bao, te tai, te ban
te lai » te tai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((te lai) or (te bai)) ky nang ma hoi. hieu ve ((cam thuc) or (cam thu)) va hanh dai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((te lai) OR (te bai)) ky nang ma hoi. hieu ve ((cam thuc) OR (cam thu)) va hanh dai cua triet.
• Adding a wildcard symbol may retrieve word variants: ((te lai) or (te bai)) ky nang ma hoi. hieu ve ((cam thuc) or (cam thu)) va hanh dai cua triet*.