Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
canh trang » canh tranh, hanh trang, banh trang
cong thanh » dong thanh, cong trinh, cong tan
doi chieu » doc hieu, doi chi, ho chieu
cong tuan » cong tan, cong luan, cong quang
trang va » tran van, hang va
va hang » van hang, va nang, va lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi chieu sach - canh trang va hang ((cong tuan) OR (cong thanh)) thanh san~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - canh trang va hang ((cong tuan) OR (cong thanh)) thanh san".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - canh trang va hang ((cong tuan) OR (cong thanh)) thanh san*.