Perhaps you should try some spelling variations:
thinh sach » chinh sach, tinh sach, sinh sach
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
hang cong » dang cong, hang nong, thanh cong
bang cong » dang cong, bang song, dung cong
san toan » van toan, dan toan, manh toan
toan cau » toan cao, toan ban, toan tap
tien » tieng, bien, vien

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

• Performing a fuzzy search may retrieve terms with similar spellings: tien thinh sach - hanh tranh cua ((hang cong) or (bang cong)) san toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tien thinh sach - hanh tranh cua ((hang cong) OR (bang cong)) san toan cau.
• Adding a wildcard symbol may retrieve word variants: tien thinh sach - hanh tranh cua ((hang cong) or (bang cong)) san toan cau*.