Perhaps you should try some spelling variations:
chieu sach » chinh sach, chieu sang, chieu xanh
dong cong » duong cong, dung cong, cong cong
dang cong » dung cong
hanh ban » thanh ban, hang ban, hanh san
dan toan » van toan, dan than, manh toan
toan cau » toan cao, toan ban, toan tap
ban cua » ban quan

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

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