Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
hanh tranh » canh tranh, hanh trinh, hanh trang
nhung cong » dung cong, thong cong, hang cong
tong cong » trong cong, cong cong, dung cong
van thanh » ban thanh, van tuan
thanh tai » thanh hai, thanh toan, doanh tai
tranh va » tranh van, trang va, trinh va

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho ((chieu xanh) OR (chieu sang)) - hanh tranh va ((nhung cong) or (tong cong)) van thanh tai~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho ((chieu xanh) OR (chieu sang)) - hanh tranh va ((nhung cong) OR (tong cong)) van thanh tai.
• The words AND, OR and NOT may confuse the search; try adding quotes: "ho ((chieu xanh) OR (chieu sang)) - hanh tranh va ((nhung cong) or (tong cong)) van thanh tai".
• Adding a wildcard symbol may retrieve word variants: ho ((chieu xanh) OR (chieu sang)) - hanh tranh va ((nhung cong) or (tong cong)) van thanh tai*.