Perhaps you should try some spelling variations:
luoc can » luc canh, hoc can, luoc dai
duc van » duc va, duc tan, duc manh
hieu ve » hieu va, hieu van
tang ma » mang may, tang van
ky tang » ky nang, ky dang, kho tang
ve cac » va cac, vien cac
ma hoi » mai hoi, xa hoi, ma hoa
sac ky » cac ky, sai ky
te sac » te sach, te cac, te san
vi va » vi van, vai va, bi va
vu va » vu van, tu va, su va

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 ma hoi. hieu ve cac ((duc van) or (luoc can)) hanh ((vi va) or (vu va)) triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: te sac ky tang ma hoi. hieu ve cac ((duc van) OR (luoc can)) hanh ((vi va) OR (vu va)) triet.
• Adding a wildcard symbol may retrieve word variants: te sac ky tang ma hoi. hieu ve cac ((duc van) or (luoc can)) hanh ((vi va) or (vu va)) triet*.