Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu sang
thanh tran » thanh trang, thanh toan, thanh tuan
xuan hoang » quan hoang, tuan hoang, xuan toan
doi chieu » doc hieu, doi chi, ho chieu
thanh tra » thanh toan, thanh hoa
luan hoan » luan van
ca cau » cua cau, cac cau, can cau

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

• If you are trying to use Boolean operators, they must be ALL CAPS: doi chieu sach - ((thanh tran) OR (thanh tra)) ((xuan hoang) OR (luan hoan)) huong dan ca cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi chieu sach - ((thanh tran) or (thanh tra)) ((xuan hoang) OR (luan hoan)) huong dan ca cau~".
• Adding a wildcard symbol may retrieve word variants: doi chieu sach - ((thanh tran) or (thanh tra)) ((xuan hoang) OR (luan hoan)) huong dan ca cau*.