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