Perhaps you should try some spelling variations:
luyen tap » tuyen tap, luyen thi
cach thuc » anh thuc
dung cong » dung trong
cac che » cac he, cac chien, cac chat
cac thu » cac thoi
cac chu » cac khu, ca chu, cac cau
te dung » tieu dung, tien dung, tin dung
ban ve » ban va
ve y » ve ky, ve _, ke y

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: luyen tap ((((cac chu) OR (cac che))) OR (((cac thu) OR (cach thuc)))) đe co ban ve y te dung cong~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "luyen tap ((((cac chu) OR (cac che))) or (((cac thu) or (cach thuc)))) đe co ban ve y te dung cong~".
• Adding a wildcard symbol may retrieve word variants: luyen tap ((((cac chu) OR (cac che))) or (((cac thu) or (cach thuc)))) đe co ban ve y te dung cong*.