Perhaps you should try some spelling variations:
luyen tap » tuyen tap, luyen thi
cong cong » cong dong, trong cong, dung cong
cac kieu » cach tieu, tac kiem, cac khu
cac che » cac he, cac chien, cac chat
ban kem » banh kem, ban ke, hanh kem
ty thuc » ty thuoc, tu thuc, y thuc
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: luyen tap ((((cac kieu) OR (cac yeu))) or (cac che)) đe co ban kem ((y thu) or (ty thuc)) cong cong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: luyen tap ((((cac kieu) OR (cac yeu))) OR (cac che)) đe co ban kem ((y thu) OR (ty thuc)) cong cong.
• The words AND, OR and NOT may confuse the search; try adding quotes: "luyen tap ((((cac kieu) OR (cac yeu))) or (cac che)) đe co ban kem ((y thu) or (ty thuc)) cong cong".
• Adding a wildcard symbol may retrieve word variants: luyen tap ((((cac kieu) OR (cac yeu))) or (cac che)) đe co ban kem ((y thu) or (ty thuc)) cong cong*.