Perhaps you should try some spelling variations:
dung thuong » dung trong, hang thuong, cong thuong
chieu xanh » chieu sach, chieu sang, chieu tinh
truong cao » truong dai
thuong dan » huong dan, thuong han, thuong dam
ho chieu » theo chieu, hoc thieu, doi chieu
trung va » truong va, trang va, trung ha
dan toan » van toan, dan than, manh toan
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 xanh - thanh ((trung va) or (truong cao)) dung thuong dan toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho chieu xanh - thanh ((trung va) OR (truong cao)) dung thuong dan toan cao.
• Adding a wildcard symbol may retrieve word variants: ho chieu xanh - thanh ((trung va) or (truong cao)) dung thuong dan toan cao*.