Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tung » thanh cong
cong quang » luong quang, thong quang, duong quang
doi chieu » doc hieu, doi chi, ho chieu
cua nhung » va nhung
cong san » cong tac
hang cau » hang dau, hang ca, nhung cau

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 - ((thanh trung) OR (thanh tung)) cua nhung ((cong san) or (cong quang)) hang cau~.
• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - ((thanh trung) OR (thanh tung)) cua nhung ((cong san) OR (cong quang)) hang cau.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - ((thanh trung) OR (thanh tung)) cua nhung ((cong san) or (cong quang)) hang cau".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - ((thanh trung) OR (thanh tung)) cua nhung ((cong san) or (cong quang)) hang cau*.