Perhaps you should try some spelling variations:
chieu tinh » trieu tinh, lieu tinh, chau tinh
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hanh hinh » hanh chinh, hanh tinh, hanh dinh
cong dan » cong san, cong tan, huong dan
gian man » gian dan, gian lan, gian van
hinh va » chinh va, hanh va, tinh va

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 hinh va nhung cong dan gian man~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((chieu tinh) OR (chieu sach)) - hanh hinh va nhung cong dan gian man.
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu tinh) or (chieu sach)) - hanh hinh va nhung cong dan gian man*.