Perhaps you should try some spelling variations:
cong thanh » dong thanh, cong trinh, cong tan
doi chieu » doc hieu, doi chi, mot chieu
hoc thieu » toc thieu, hoc hien
thanh hoa » thanh pho
cong dap » cong dan, cong lap, cong da
ung cong » dung cong, luong cong, duong cong
hoa tap » khoa tap, hoc tap, hoa tan

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 (hoc thieu)) tinh - thanh cong dap ung cong thanh hoa tap~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((doi chieu) OR (hoc thieu)) tinh - thanh cong dap ung cong thanh hoa tap.
• Adding a wildcard symbol may retrieve word variants: ((doi chieu) or (hoc thieu)) tinh - thanh cong dap ung cong thanh hoa tap*.