Perhaps you should try some spelling variations:
dung thuong » dung trong, hang thuong, cong thuong
thuong bang » phuong bang, thuong lang, tuong bang
theo chieu » theo tieu, ho chieu, theo chu
chieu xanh » chieu sach, chieu sang, chieu tinh
hanh tranh » canh tranh, hanh trinh, hanh trang
tranh cua » doanh cua, manh cua
cua dung » cua dang, cua dong, qua dung
than cao » thai cao, than cap, than sao
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: theo chieu xanh - hanh tranh cua dung thuong bang ((than cao) or (toan cao))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chieu xanh - hanh tranh cua dung thuong bang ((than cao) OR (toan cao)).
• Adding a wildcard symbol may retrieve word variants: theo chieu xanh - hanh tranh cua dung thuong bang ((than cao) or (toan cao))*.