Perhaps you should try some spelling variations:
quyen tap » tuyen tap, luyen tap, quyen cap
cong cong » cong dong, trong cong, dung cong
cong dung » cuong dung, cong dong, cong luong
cac chu » cac che, cac khu, ca chu
cac thu » cach thuc, cac thoi
ban ke » ban kem, ban ve, ban le
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: quyen tap ((cac chu) or (cac thu)) đe co ban ke y te ((cong cong) or (cong dung))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: quyen tap ((cac chu) OR (cac thu)) đe co ban ke y te ((cong cong) OR (cong dung)).
• Adding a wildcard symbol may retrieve word variants: quyen tap ((cac chu) or (cac thu)) đe co ban ke y te ((cong cong) or (cong dung))*.