Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
tranh cua » doanh cua, manh cua
bang cong » dang cong, bang song, hang cong
cong bang » cuong bang, dong bang, hong bang
cua bang » chua bang, cua ban, cua dang
than cau » toan cau, phan cau, than cap
phan lap » phan dau

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 (chieu sang)) - canh tranh cua bang cong bang ((than cau) or (phan lap))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((chieu sach) OR (chieu sang)) - canh tranh cua bang cong bang ((than cau) OR (phan lap)).
• Adding a wildcard symbol may retrieve word variants: theo ((chieu sach) or (chieu sang)) - canh tranh cua bang cong bang ((than cau) or (phan lap))*.