Perhaps you should try some spelling variations:
dong thieu » dong trieu, dong hieu, dong tieu
thanh tung » thanh cong
tung thuoc » trung thuoc, dung thuoc, ung thuoc
thuoc dung » hoc dung, thuy dung
cong thanh » dong thanh, cong trinh, cong tan
doi chieu » doc hieu, doi chi, mot chieu
dung cong » dung trong
san tap » han tap, man tap, san tay

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((doi chieu) or (dong thieu)) tinh - thanh tung thuoc dung cong thanh san tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (dong thieu)) tinh - thanh tung thuoc dung cong thanh san tap.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (dong thieu)) tinh - thanh tung thuoc dung cong thanh san tap*.