Perhaps you should try some spelling variations:
quyen tap » tuyen tap, luyen tap, quyen cap
cach thuc » anh thuc
cong cong » cong dong, trong cong, dung cong
cac thu » cac thoi
cua chu » sua chua
ban ve » ban va
ty tai » ly tai, tu tai, te tai
y tai » ly tai, y thai, _ tai

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 ((cua chu) or (((cac thu) or (cach thuc)))) đe co ban ve ((y tai) OR (ty tai)) cong cong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: quyen tap ((cua chu) OR (((cac thu) OR (cach thuc)))) đe co ban ve ((y tai) OR (ty tai)) cong cong.
• The words AND, OR and NOT may confuse the search; try adding quotes: "quyen tap ((cua chu) or (((cac thu) or (cach thuc)))) đe co ban ve ((y tai) OR (ty tai)) cong cong".
• Adding a wildcard symbol may retrieve word variants: quyen tap ((cua chu) or (((cac thu) or (cach thuc)))) đe co ban ve ((y tai) OR (ty tai)) cong cong*.