Perhaps you should try some spelling variations:
luyen tap » tuyen tap, luyen thi
cach thuc » anh thuc, cac thu
dung cong » dung trong
tai dung » trai dung, thi dung, mai dung
cac thoi » cac toi, cac hop, cac tro
cua chu » sua chua
ve y » ve ky, ve _, te y
ke y » ke ky, ke o

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

• Performing a fuzzy search may retrieve terms with similar spellings: luyen tap ((cua chu) or (((cac thoi) or (cach thuc)))) đe co ban ((ve y) or (ke y)) tai dung cong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: luyen tap ((cua chu) OR (((cac thoi) OR (cach thuc)))) đe co ban ((ve y) OR (ke y)) tai dung cong.
• Adding a wildcard symbol may retrieve word variants: luyen tap ((cua chu) or (((cac thoi) or (cach thuc)))) đe co ban ((ve y) or (ke y)) tai dung cong*.