Perhaps you should try some spelling variations:
cong doanh » cong doan, dong doanh, rong doanh
hanh trinh » canh tranh, hanh chinh
hieu tach » hieu cach, chiet tach, chieu sach
luat hang » luat hanh, luat chung, luat quang
cong danh » cuong danh, cong dan, cong thanh
doc hieu » toc thieu, hoc thieu, hoc hien
quan cau » quang cao, toan cau, quan ha

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "doc hieu tach - hanh trinh luat hang ((cong doanh) OR (cong danh)) quan cau~".
• Adding a wildcard symbol may retrieve word variants: doc hieu tach - hanh trinh luat hang ((cong doanh) OR (cong danh)) quan cau*.