Perhaps you should try some spelling variations:
ve triet » va trien, su triet
luoc can » luc canh, hoc can, luoc dai
duc manh » suc manh, duc anh, duc minh
kho tang » cao tang
hieu ve » hieu va, hieu van
ky dang » ky nang, ky danh
ma hoi » mai hoi, xa hoi, ma hoa
ve cac » va cac, vien cac
te sac » te sach, te cac, te san
vi ve » va ve, gi ve, ve ve

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