Perhaps you should try some spelling variations:
quyen tap » tuyen tap, luyen tap, huyen tam
quyen cap » quyen cach, huyen cao, quyen con
cong cong » cong dong, trong cong, dung cong
cong dung » cuong dung, cong dong, cong luong
cac che » cac he, cac chien, cac chat
ky thai » ky thi, y thai, ky thay
ban ke » ban kem, ban ve, ban le

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) or (quyen cap)) cac che đe co ban ke ky thai ((cong cong) or (cong dung))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((quyen tap) OR (quyen cap)) cac che đe co ban ke ky thai ((cong cong) OR (cong dung)).
• Adding a wildcard symbol may retrieve word variants: ((quyen tap) or (quyen cap)) cac che đe co ban ke ky thai ((cong cong) or (cong dung))*.