Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
va hanh » van hanh, va thanh, va danh
vai cua » dai cua, hai cua, lai cua
su sach » so sach, vu sach
cac tac » cac toc, cac bac, cac dac
hieu ve » hieu va, hieu van
nang ma » tang ma, sang ma, nang cao
y nang » ky nang, ly nang, v nang
ve cac » va cac, vien cac
ma hoi » mai hoi, xa hoi, ma hoa

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

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