Perhaps you should try some spelling variations:
doanh doanh » toan doanh, doanh hoan, doanh thanh
hanh doanh » hang doanh, chinh doanh, kinh doanh
cua thuong » cua truong, ca thuong, cua huong
cua phuong » cuu phuong, cuc phuong, luan phuong
hieu lang » chieu sang, hieu quang, nhieu tang
cong tuan » cong tan, cong luan, cong thanh
tuan van » luan van, tran van, tan van
ho hieu » ho chieu, hoi hieu, nho hieu

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho hieu lang - ((hanh doanh) OR (doanh doanh)) ((cua thuong) or (cua phuong)) cong tuan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho hieu lang - ((hanh doanh) OR (doanh doanh)) ((cua thuong) OR (cua phuong)) cong tuan van ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho hieu lang - ((hanh doanh) OR (doanh doanh)) ((cua thuong) or (cua phuong)) cong tuan van ban".
• Adding a wildcard symbol may retrieve word variants: ho hieu lang - ((hanh doanh) OR (doanh doanh)) ((cua thuong) or (cua phuong)) cong tuan van ban*.