Perhaps you should try some spelling variations:
canh trang » canh tranh, hanh trang, banh trang
chieu sang » chieu sach, chieu xanh, nhieu tang
nhung cong » dung cong, thong cong, nhung don
hieu lang » hieu quang, nhieu tang, hieu van
hang cong » dang cong, hang nong, bang cong
trang va » tran van, hang va
van toan » van tuan, van tan, van thanh
toan cao » toan ban, toan tap

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