Perhaps you should try some spelling variations:
cong thuong » hang thuong
chieu xanh » chieu sach, chieu sang, chieu tinh
canh trinh » canh tranh, hanh trinh, canh tinh
toc chieu » toc thieu, doc hieu, hoc thieu
cong lang » cong vang, cong luong, cong quang
trinh va » trinh van, trinh vat, trinh ve
than cao » toan cao, thai cao, than cap

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

• Performing a fuzzy search may retrieve terms with similar spellings: toc chieu xanh - canh trinh va nhung ((cong lang) or (cong thuong)) than cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: toc chieu xanh - canh trinh va nhung ((cong lang) OR (cong thuong)) than cao.
• Adding a wildcard symbol may retrieve word variants: toc chieu xanh - canh trinh va nhung ((cong lang) or (cong thuong)) than cao*.