Perhaps you should try some spelling variations:
cong thuong » hang thuong
thuong ung » thuong dung, thuong hung, huong ung
dung huong » dung thuong, dung phuong, dong huong
hoc thieu » toc thieu, hoc hien
huong van » huong dan, duong van, hong van
van thanh » ban thanh, van tuan
thanh tap » thanh lap, thanh tai, thanh tay
doc hieu » toc thieu, hoc hien

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doc hieu) or (hoc thieu)) sang - cong thuong ung dung huong van thanh tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doc hieu) OR (hoc thieu)) sang - cong thuong ung dung huong van thanh tap*.