Perhaps you should try some spelling variations:
dong thieu » dong trieu, dong hieu, dong tieu
thanh dung » thanh duong, thanh tung, thanh hung
doi chieu » doc hieu, doi chi, mot chieu
dung thuy » duong thuy, dang thuy, dung thu
thuy dung » thuy duong, thuoc dung, huy duong
dung cong » dung trong
cong tan » cong tac, cong san, cong thanh
tran cao » toan cao, tran chau, trang cho

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 dung thuy dung cong tan tran cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (dong thieu)) tinh - thanh dung thuy dung cong tan tran cao.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (dong thieu)) tinh - thanh dung thuy dung cong tan tran cao*.