Perhaps you should try some spelling variations:
thanh trung » thanh tung
thanh thanh » thanh toan, thanh phan, phan thanh
nhanh thanh » phan thanh, nhanh tinh
thiet tach » chiet tach, thien hach, thuat tach
trung tuan » trung thanh, trung tam, tran tuan
nhung cong » thong cong, hang cong, nhung don
dung cong » dung trong
ho thiet » hoc thiet, hoa thiet, so thiet

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

• Performing a fuzzy search may retrieve terms with similar spellings: ho thiet tach - thanh trung tuan ((nhung cong) or (dung cong)) ((thanh thanh) or (nhanh thanh)) cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ho thiet tach - thanh trung tuan ((nhung cong) OR (dung cong)) ((thanh thanh) OR (nhanh thanh)) cap.
• Adding a wildcard symbol may retrieve word variants: ho thiet tach - thanh trung tuan ((nhung cong) or (dung cong)) ((thanh thanh) or (nhanh thanh)) cap*.