Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
chinh quan » chinh luan, chinh quyen, trinh quan
nhung cong » dung cong, thong cong, hang cong
cong thanh » dong thanh, cong trinh, cong tan
thanh toan » thanh hoa, thanh san, tinh toan
toan cau » toan cao, toan ban, toan tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chiet tach) or (chieu sach)) - hanh ((chinh quan) OR (chinh ngan)) nhung cong thanh toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi ((chiet tach) OR (chieu sach)) - hanh ((chinh quan) OR (chinh ngan)) nhung cong thanh toan cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chiet tach) or (chieu sach)) - hanh ((chinh quan) OR (chinh ngan)) nhung cong thanh toan cau".
• Adding a wildcard symbol may retrieve word variants: doi ((chiet tach) or (chieu sach)) - hanh ((chinh quan) OR (chinh ngan)) nhung cong thanh toan cau*.