Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
dung cong » dung trong
ho chieu » theo chieu, hoc thieu, doi chieu
tra tuan » tran tuan, tri tuan, ta tuan
tra quan » tri quan, tran quang, toan quan
cong tan » cong tac, cong san, cong thanh
tran cau » tran chau, toan cau, ran cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho chieu sach - thanh ((tra tuan) or (tra quan)) dung cong tan tran cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu sach - thanh ((tra tuan) OR (tra quan)) dung cong tan tran cau.
• Adding a wildcard symbol may retrieve word variants: ho chieu sach - thanh ((tra tuan) or (tra quan)) dung cong tan tran cau*.