Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sach » chinh sach, chiet tach, chieu sang
hanh trung » thanh trung, hanh trang, manh trung
nhung cong » dung cong, thong cong, hang cong
chang wang » chang nang, hang hang, chan dang
trung cua » truong cua, trung tuan, trung cap
cua nhung » va nhung
cong san » cong tac
chan ban » can ban, chat ban, chan nan

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)) - hanh trung cua nhung cong san ((chan ban) or (chang wang))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (chieu sach)) - hanh trung cua nhung cong san ((chan ban) OR (chang wang)).
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) or (chieu sach)) - hanh trung cua nhung cong san ((chan ban) or (chang wang))*.