Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sach » chinh sach, chiet tach, chieu sang
manh trung » manh tung, thanh trung, manh hung
trung tuan » trung thanh, trung tam, tran tuan
tuan dung » tuan duong, tran dung, tan dung
dung cong » dung trong
cong dan » cong san, cong tan, huong dan
dan van » dang van, doan van, dao van

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 tinh) or (chieu sach)) - manh trung tuan dung cong dan van ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (chieu sach)) - manh trung tuan dung cong dan van ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) or (chieu sach)) - manh trung tuan dung cong dan van ban*.