Liverpool followed up their win over Merseyside rivals Everton with a disappointing 2-2 draw against Bournemouth in midweek.
The Reds are unbeaten in their Premier League games against the top six sides but have found it tough to beat teams in the lower half.
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Fri, April 7, 2017
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And Can admits the Liverpool players have failed to work out the reasons for their struggles.
He told Sky Sports: "I don't think anyone knows [why Liverpool haven't performed as well against lower league opposition].
Liverpool midfielder Emre Can battles with Jack Wilshere
"You have to go into every game with the same mentality and maybe we didn't do that, I don't know.
"Maybe we didn't do those two or three extra steps and that's why we didn't win those games but like games against Bournemouth.
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"We could've won that game, it was in our hands and then we conceded a goal when we could have cleared the ball three or four times before."