Perhaps you should try some spelling variations:
dung phuong » dung thuong, bang phuong, dung chung
cong thuong » hang thuong
thuong ung » thuong dung, thuong hung, huong ung
phuong van » phung van, phong van, phuong lan
hoc thieu » toc thieu, hoc hien
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 phuong 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 phuong van thanh tap*.