Perhaps you should try some spelling variations:
cua triet » cua viet, su triet, va triet
nam thuc » nam thuoc, am thuc, nam thu
ban hang » ngan hang
vai cua » dai cua, hai cua, lai cua
su sach » so sach, vu sach
sach ky » sac ky, sach y, sach ty
hieu va » lieu va, hieu qua
hieu ha » hieu hoa, hieu ca, hieu xa
x hoi » xa hoi, o hoi, x ho

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 ky nang x hoi. ((hieu ha) or (hieu va)) nam thuc ((ban hanh) OR (ban hang)) vai cua triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: su sach ky nang x hoi. ((hieu ha) OR (hieu va)) nam thuc ((ban hanh) OR (ban hang)) vai cua triet*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "su sach ky nang x hoi. ((hieu ha) or (hieu va)) nam thuc ((ban hanh) OR (ban hang)) vai cua triet*".