Perhaps you should try some spelling variations:
doanh cua » doanh luan
ky doanh » ly doanh, ky danh, ty doanh
su triet » su viet, su tien, ve triet
vu sach » su sach, vu khach
cua hoi » cua moi
hieu va » hieu qua
anh hai » lanh hai, manh hai, anh thai
va anh » van anh, va hanh, va danh
hai su » hai vu, lai su, hai so
du va » dau va, tu va, su va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((vu sach) or (vu bach)) ky doanh cua hoi. ((hieu va) OR (lieu va)) cac du va anh hai su triet~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((vu sach) OR (vu bach)) ky doanh cua hoi. ((hieu va) OR (lieu va)) cac du va anh hai su triet.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((vu sach) or (vu bach)) ky doanh cua hoi. ((hieu va) OR (lieu va)) cac du va anh hai su triet".
• Adding a wildcard symbol may retrieve word variants: ((vu sach) or (vu bach)) ky doanh cua hoi. ((hieu va) OR (lieu va)) cac du va anh hai su triet*.