Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh
chieu sach » chinh sach, chiet tach, chieu sang
nhung cong » dung cong, thong cong, hang cong
hieu manh » hieu nganh, dieu hanh, hien hanh
tranh va » tranh van, trang va, trinh va
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than ban » thanh ban, toan ban, than man

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 xanh) or (hieu manh))) or (chieu sach)) - canh tranh va nhung cong dan than ban~.
• If you are trying to use Boolean operators, they must be ALL CAPS: hoc ((((chieu xanh) OR (hieu manh))) OR (chieu sach)) - canh tranh va nhung cong dan than ban.
• Adding a wildcard symbol may retrieve word variants: hoc ((((chieu xanh) or (hieu manh))) or (chieu sach)) - canh tranh va nhung cong dan than ban*.