Perhaps you should try some spelling variations:
cam thuc » nam thuc, cam thu, can thuc
ve triet » va trien, su triet
nang xa » nang x, lang xa, nang ma
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, va hanh
danh de » hanh de, dan de, dang de
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky

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

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