Perhaps you should try some spelling variations:
chieu sach » chiet tach, chieu sang, chieu xanh
thanh tran » thanh trang, thanh toan, thanh tra
tran tuan » tran xuan, tran quang, tran thanh
tuan hang » tuan hoang, tuan bang, tuan dang
hang cong » dang cong, hang nong, bang cong
toan cao » toan ban, toan tap
can cau » van cau, ban cau, ca cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((chieu sach) OR (chinh sach)) - thanh tran tuan hang cong dong ((toan cao) or (can cau))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu sach) OR (chinh sach)) - thanh tran tuan hang cong dong ((toan cao) OR (can cau)).
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu sach) OR (chinh sach)) - thanh tran tuan hang cong dong ((toan cao) or (can cau))".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu sach) OR (chinh sach)) - thanh tran tuan hang cong dong ((toan cao) or (can cau))*.