Perhaps you should try some spelling variations:
thi cong » tai cong, thien cong
cac chu » cac khu, ca chu, cac cau
cac thu » cach thuc, cac thoi
cac che » cac he, cac chien, cac chat
te cong » tai cong, thu cong
ban ve » ban va
ve y » ve ky, ve _, ke y
tuyen » truyen, quyen

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

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