Perhaps you should try some spelling variations:
theo chiet » theo chieu, thep thiet
chiet tach » chieu sach
cong thanh » dong thanh, cong trinh, cong tan
thanh than » thanh thanh, thanh thang, thanh toan
manh cua » doanh cua
than cau » toan cau, phan cau, than cap
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 chiet tach - canh ((manh cua) or (ban cua)) trong cong thanh than cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chiet tach - canh ((manh cua) OR (ban cua)) trong cong thanh than cau.
• Adding a wildcard symbol may retrieve word variants: theo chiet tach - canh ((manh cua) or (ban cua)) trong cong thanh than cau*.