Perhaps you should try some spelling variations:
nhung cong » dung cong, thong cong, hang cong
chieu sach » chinh sach, chiet tach, chieu sang
hanh anh » thanh anh, hinh anh, anh anh
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than tap » toan tap, han tap, phan tap
anh va » hanh va
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 (chieu sach)) - hanh anh va nhung cong dan than tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((trieu tinh) OR (chieu sach)) - hanh anh va nhung cong dan than tap.
• Adding a wildcard symbol may retrieve word variants: hoc ((trieu tinh) or (chieu sach)) - hanh anh va nhung cong dan than tap*.