Perhaps you should try some spelling variations:
chung huong » nhung huong, chuong duong, nhung phuong
theo chieu » theo tieu, theo chu, thi chieu
luan chung » luan chinh
doanh van » doan van, doanh va, doanh ban
chinh cau » chinh chau, chinh ca, chinh can
ho chieu » hoc thieu, doi chieu, mot chieu
van luan » van quan, van tuan, von luan
chan cau » phan cau, can cau, nhanh cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((ho chieu) or (theo chieu)) sach - doanh van luan chung huong dan ((chan cau) OR (chinh cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((ho chieu) OR (theo chieu)) sach - doanh van luan chung huong dan ((chan cau) OR (chinh cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ho chieu) or (theo chieu)) sach - doanh van luan chung huong dan ((chan cau) OR (chinh cau))".
• Adding a wildcard symbol may retrieve word variants: ((ho chieu) or (theo chieu)) sach - doanh van luan chung huong dan ((chan cau) OR (chinh cau))*.