Perhaps you should try some spelling variations:
chiet tach » chieu sach
bien tinh » bi tinh, yen tinh, diep tinh
tong cong » trong cong, cong cong, dung cong
manh cua » doanh cua
cong dan » cong san, cong tan, huong dan
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 ((bien tinh) or (chiet tach)) - hanh ((manh cua) or (ban cua)) tong cong dan toan cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo ((bien tinh) OR (chiet tach)) - hanh ((manh cua) OR (ban cua)) tong cong dan toan cau.
• Adding a wildcard symbol may retrieve word variants: theo ((bien tinh) or (chiet tach)) - hanh ((manh cua) or (ban cua)) tong cong dan toan cau*.