Perhaps you should try some spelling variations:
nam thuc » nam thuoc, am thuc, nam thu
van hanh » van thanh, ban hanh, van anh
ve triet » va trien, su triet
ky tang » ky nang, ky dang, kho tang
tang xa » trang xa, tang ma, lang xa
hieu ve » hieu va, hieu van
va danh » va dinh, va dan, va hanh
te sac » te sach, te cac, te san
sac ky » cac ky, sai ky
va ve » va de, va le, va vi

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 tang xa hoi. hieu ve ((nam thuc) or (cam xuc)) ((va danh) or (van hanh)) va ve triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky tang xa hoi. hieu ve ((nam thuc) OR (cam xuc)) ((va danh) OR (van hanh)) va ve triet.
• Adding a wildcard symbol may retrieve word variants: te sac ky tang xa hoi. hieu ve ((nam thuc) or (cam xuc)) ((va danh) or (van hanh)) va ve triet*.