Perhaps you should try some spelling variations:
dung thuong » dung trong, hang thuong, dung thuoc
cong thuong » hang thuong
hanh dung » thanh dung, anh dung, hanh dong
thi hieu » thi chieu, thi hien, thi dieu
theo chu » theo chieu, cho chu, chao chu
dung cua » dung luan, dung cho
dan phan » doan phan, dan chan, van phan
phan tap » phan lap, han tap, pha tap

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((thi hieu) or (theo chu)) xanh - hanh dung cua ((dung thuong) OR (cong thuong)) dan phan tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((thi hieu) OR (theo chu)) xanh - hanh dung cua ((dung thuong) OR (cong thuong)) dan phan tap.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((thi hieu) or (theo chu)) xanh - hanh dung cua ((dung thuong) OR (cong thuong)) dan phan tap".
• Adding a wildcard symbol may retrieve word variants: ((thi hieu) or (theo chu)) xanh - hanh dung cua ((dung thuong) OR (cong thuong)) dan phan tap*.