Perhaps you should try some spelling variations:
thanh trung » thanh tung
trung thuoc » trung thuc, trung quoc, trung hoc
theo tien » theo tieu, thuc tien, theo tcvn
tien hanh » tien thanh, hien hanh, tien anh
bang cong » bang song, hang cong, dung cong
dang cong » dung cong
dan than » dan chan, ban than, van than
than cap » khan cap, thanh lap, thanh cac

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

• Performing a fuzzy search may retrieve terms with similar spellings: theo tien hanh - thanh trung thuoc ((bang cong) or (dang cong)) dan than cap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo tien hanh - thanh trung thuoc ((bang cong) OR (dang cong)) dan than cap.
• Adding a wildcard symbol may retrieve word variants: theo tien hanh - thanh trung thuoc ((bang cong) or (dang cong)) dan than cap*.