Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
luoc can » luc canh, hoc can, luoc dai
nang ma » tang ma, sang ma, nang cao
hieu ve » hieu va, hieu van
te sac » te sach, te san
te cac » tu cac, te cao, de cac
ma hoi » mai hoi, xa hoi, ma hoa
ve cac » va cac, vien cac
vi cua » vai cua, di cua

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