Perhaps you should try some spelling variations:
cach thoi » cac thoi, cach thuc, cach noi
quyen tap » tuyen tap, luyen tap, quyen cap
cac khoi » cac thoi, cac khoan, hoc khoi
cac che » cac he, cac chien, cac chat
cac khu » cac thu, cac kieu
te cong » tai cong, thi cong, thu cong
ban ve » ban va
dong » dung

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