Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va hanh » van hanh, va thanh, va danh
va cham » va chat, va tham
nang ma » tang ma, sang ma, nang cao
ma hoi » mai hoi, xa hoi, ma hoa
ve cac » va cac, vien cac
su dai » sau dai, si dai, su tai
luc va » duc va, tuc va, loc va
vi cua » vai cua, di cua
su sai » su tai, su hai, su mai

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((su sai) OR (su dai)) ky nang ma hoi. hieu ((va cham) or (ve cac)) luc va hanh vi cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((su sai) OR (su dai)) ky nang ma hoi. hieu ((va cham) OR (ve cac)) luc va hanh vi cua triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((su sai) OR (su dai)) ky nang ma hoi. hieu ((va cham) or (ve cac)) luc va hanh vi cua triet".
• Adding a wildcard symbol may retrieve word variants: ((su sai) OR (su dai)) ky nang ma hoi. hieu ((va cham) or (ve cac)) luc va hanh vi cua triet*.