Perhaps you should try some spelling variations:
quyen tap » tuyen tap, luyen tap, quyen cap
cach thuc » cac thu
cong cong » cong dong, trong cong, dung cong
anh thuc » am thuc, dan thuc, anh tu
tin cong » tien cong, tan cong, thien cong
cac khu » cac thu, cac khoi, cac kieu
quy tin » quy trinh, quy dinh
ban ve » ban va
ve quy » le quy, va quy

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 ((((cach thuc) or (anh thuc))) or (cac khu)) đe co ban ve quy tin cong cong~.
• If you are trying to use Boolean operators, they must be ALL CAPS: quyen tap ((((cach thuc) OR (anh thuc))) OR (cac khu)) đe co ban ve quy tin cong cong.
• Adding a wildcard symbol may retrieve word variants: quyen tap ((((cach thuc) or (anh thuc))) or (cac khu)) đe co ban ve quy tin cong cong*.