Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
nhung cong » dung cong, thong cong, hang cong
hieu manh » chieu xanh, hieu nganh, dieu hanh
tranh van » tran van, trinh van, thanh van
van nhung » van nhuong, va nhung, van hung
cong dan » cong san, cong tan, huong dan
dan than » dan chan, ban than, van than
than cao » toan cao, thai cao, than cap

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((hieu manh) OR (((chieu sang) OR (chieu sach)))) - canh tranh van nhung cong dan than cao~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((hieu manh) or (((chieu sang) OR (chieu sach)))) - canh tranh van nhung cong dan than cao~".
• Adding a wildcard symbol may retrieve word variants: ho ((hieu manh) or (((chieu sang) OR (chieu sach)))) - canh tranh van nhung cong dan than cao*.