Perhaps you should try some spelling variations:
quyen tap » tuyen tap, luyen tap, quyen cap
cach thuc » anh thuc, cac thu
te thuong » tu thuong, thi thuong, yeu thuong
te thong » he thong, te trong, theo thong
cac chu » cac thu, cac che, cac khu
ban ve » ban va
ve y » ve ky, ve _, ke y

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

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