Perhaps you should try some spelling variations:
chieu xanh » chieu sach, chieu tinh, hieu manh
chieu sang » chieu sach, hieu lang, nhieu tang
hieu cach » hieu cac, chieu sach, hieu ca
dung cong » dung trong
tranh va » tranh van, trang va, trinh va
cong dan » cong san, cong tan, huong dan
dan toan » van toan, dan than, manh toan
toan ban » van ban
va dung » van dung, va duong, vat dung

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