Perhaps you should try some spelling variations:
theo chieu » theo tieu, ho chieu, theo chu
chieu sach » chinh sach, chiet tach, chieu sang
cong thanh » dong thanh, cong trinh, cong tan
canh manh » lanh manh, canh tranh, cach mang
cong cong » cong dong, trong cong, dung cong
manh cua » doanh cua, ban cua
hai cau » hai chau, hai chu, hoi cau
hai hau » hai chau, dai hau, hai hai

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 - canh manh cua cong cong thanh ((hai cau) or (hai hau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu sach - canh manh cua cong cong thanh ((hai cau) OR (hai hau)).
• Adding a wildcard symbol may retrieve word variants: theo chieu sach - canh manh cua cong cong thanh ((hai cau) or (hai hau))*.