Perhaps you should try some spelling variations:
quyen tap » tuyen tap, luyen tap, quyen cap
cach thuc » anh thuc, cac thu
cong cong » cong dong, trong cong, dung cong
cac thoi » cac toi, cac tro, cac thu
te cong » tai cong, thi cong, thu cong
ban le » ban ve
le y » le ky, le sy, ly 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 ((cach thuc) or (((cac thoi) or (cac hop)))) đe co ban le y te cong cong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: quyen tap ((cach thuc) OR (((cac thoi) OR (cac hop)))) đe co ban le y te cong cong.
• Adding a wildcard symbol may retrieve word variants: quyen tap ((cach thuc) or (((cac thoi) or (cac hop)))) đe co ban le y te cong cong*.