Perhaps you should try some spelling variations:
luyen tap » tuyen tap, luyen thi
cong cong » cong dong, trong cong, dung cong
cac thoi » cac toi, cac hop, cac tro
cac chu » cac che, cac khu, ca chu
cac thu » cach thuc
te cong » tai cong, thi cong, thu cong
ban ke » ban kem, ban ve, ban ky
ban le » ban ve

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

• Performing a fuzzy search may retrieve terms with similar spellings: luyen tap ((cac chu) or (((cac thu) OR (cac thoi)))) đe co ((ban ke) or (ban le)) y te cong cong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: luyen tap ((cac chu) OR (((cac thu) OR (cac thoi)))) đe co ((ban ke) OR (ban le)) y te cong cong.
• The words AND, OR and NOT may confuse the search; try adding quotes: "luyen tap ((cac chu) or (((cac thu) OR (cac thoi)))) đe co ((ban ke) or (ban le)) y te cong cong".
• Adding a wildcard symbol may retrieve word variants: luyen tap ((cac chu) or (((cac thu) OR (cac thoi)))) đe co ((ban ke) or (ban le)) y te cong cong*.