Perhaps you should try some spelling variations:
chieu xanh » chieu sang, chieu tinh, hieu manh
chieu sach » chinh sach, chiet tach, chieu sang
dung cong » dung trong
van thanh » ban thanh, van tuan
tranh va » tranh van, trang va, trinh va
cong van » cong vang, cong san, song van
thanh tu » hanh tu, nhanh tu, thanh tung
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: hoc ((chieu xanh) OR (chieu sach)) - canh tranh va dung cong van thanh tu~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "hoc ((chieu xanh) OR (chieu sach)) - canh tranh va dung cong van thanh tu".
• Adding a wildcard symbol may retrieve word variants: hoc ((chieu xanh) OR (chieu sach)) - canh tranh va dung cong van thanh tu*.