Perhaps you should try some spelling variations:
chiet tach » chieu sach
hanh trung » thanh trung, hanh trang, manh trung
dong thanh » truong thanh
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
dong anh » hong anh, hoang anh, dong kinh
tuan ban » tuan bang, toan ban, luan ban
tinh » trinh, dinh, minh

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

• Performing a fuzzy search may retrieve terms with similar spellings: hoc ((trieu tinh) or (chiet tach)) - hanh trung cua nhung ((dong anh) OR (dong thanh)) tuan ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((trieu tinh) OR (chiet tach)) - hanh trung cua nhung ((dong anh) OR (dong thanh)) tuan ban.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((trieu tinh) or (chiet tach)) - hanh trung cua nhung ((dong anh) OR (dong thanh)) tuan ban".
• Adding a wildcard symbol may retrieve word variants: hoc ((trieu tinh) or (chiet tach)) - hanh trung cua nhung ((dong anh) OR (dong thanh)) tuan ban*.