Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
tong cong » trong cong, cong cong, dung cong
tran van » luan van
cong san » cong tac
san gian » dan gian, san giao, van gian
gian cau » gian chau, gian cac, gian cam

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 xanh) OR (chieu sach)) - hanh ((hang va) or (tran van)) tong cong san gian cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sach)) - hanh ((hang va) OR (tran van)) tong cong san gian cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) OR (chieu sach)) - hanh ((hang va) or (tran van)) tong cong san gian cau".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) OR (chieu sach)) - hanh ((hang va) or (tran van)) tong cong san gian cau*.