Perhaps you should try some spelling variations:
quyen tap » tuyen tap, luyen tap, quyen cap
cong cong » cong dong, trong cong, dung cong
cac thoi » cac toi, cac hop, cac tro
benh kho » benh khong, benh phoi, benh hoc
cac chu » cac thu, cac che, cac khu
ban lem » ban kem
ban le » ban ve
y thu » ly thu, ky thu, y thuc

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 thoi)) đe co ((ban le) or (((ban lem) or (benh kho)))) y thu cong cong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: quyen tap ((cac chu) OR (cac thoi)) đe co ((ban le) OR (((ban lem) OR (benh kho)))) y thu cong cong.
• Adding a wildcard symbol may retrieve word variants: quyen tap ((cac chu) or (cac thoi)) đe co ((ban le) or (((ban lem) or (benh kho)))) y thu cong cong*.