Perhaps you should try some spelling variations:
thi cong » tai cong, thien cong
cac khoi » cac thoi, cac khoan, cach thoi
cac khu » cac kieu
cac thu » cach thuc, cac thoi
te cong » tai cong, thu cong
ban ve » ban va
ve y » ve ky, ve _, ke y
tuyen » truyen, quyen
dong » dung

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

• Performing a fuzzy search may retrieve terms with similar spellings: tuyen tap ((((cac khu) OR (cac khoi))) or (cac thu)) đe co ban ve y ((te cong) or (thi cong)) dong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: tuyen tap ((((cac khu) OR (cac khoi))) OR (cac thu)) đe co ban ve y ((te cong) OR (thi cong)) dong.
• The words AND, OR and NOT may confuse the search; try adding quotes: "tuyen tap ((((cac khu) OR (cac khoi))) or (cac thu)) đe co ban ve y ((te cong) or (thi cong)) dong".
• Adding a wildcard symbol may retrieve word variants: tuyen tap ((((cac khu) OR (cac khoi))) or (cac thu)) đe co ban ve y ((te cong) or (thi cong)) dong*.