Perhaps you should try some spelling variations:
chieu sach » chinh sach, chiet tach, chieu xanh
chieu sang » chieu xanh, hieu lang, nhieu tang
cong thanh » dong thanh, cong trinh, cong tan
tranh huy » thanh huy, trang huy, tranh chua
dong cong » duong cong, dung cong, dang cong
thanh ban » thanh san, thanh van, thanh bac
huy dong » ha dong
ban cau » bang cau, ban can, van cau

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

• Performing a fuzzy search may retrieve terms with similar spellings: doi ((chieu sach) OR (chieu sang)) - canh tranh huy dong cong thanh ban cau~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "doi ((chieu sach) OR (chieu sang)) - canh tranh huy dong cong thanh ban cau".
• Adding a wildcard symbol may retrieve word variants: doi ((chieu sach) OR (chieu sang)) - canh tranh huy dong cong thanh ban cau*.