Perhaps you should try some spelling variations:
quyen cap » quyen cach, huyen cao, quyen con
cong cong » cong dong, trong cong, dang cong
dung cong » dung trong
cap cac » ca cac, cap sac, tap cac
cac che » cac he, cac chien, cac chat
ve ky » va ky, ke ky
ve y » ve _, te y
ke y » ke ky, ke o

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

• If you are trying to use Boolean operators, they must be ALL CAPS: quyen cap cac che đe co ban ((((ve y) OR (ke y))) OR (ve ky)) te ((cong cong) OR (dung cong))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "quyen cap cac che đe co ban ((((ve y) OR (ke y))) or (ve ky)) te ((cong cong) or (dung cong))~".
• Adding a wildcard symbol may retrieve word variants: quyen cap cac che đe co ban ((((ve y) OR (ke y))) or (ve ky)) te ((cong cong) or (dung cong))*.