St Johnstone manager Steve Lomas feels not turning enough chances into goals is limiting his team's potential.
The Perth side came from behind to earn a draw in the Tayside derby at Tannadice.
"From a slightly critical point of view we have got to look at our conversion rate," Lomas told BBC Scotland.
"We're creating a lot of chances but our conversion rate is quite low. It's probably the main reason we've drawn so many games this year."
Saints have now gone five games without a Scottish Premier League win. Their last league victory came at Kilmarnock in November.
At Tannadice, United keeper Radoslaw Cierzniak saved several efforts from Liam Craig and Gregory Tade.
"The last three home games we should be sitting with nine points if we take our chances," said Lomas.
"That being said, the good thing is we're creating chances and we've just got to persevere with our convictions and keep getting in there.
"I'd be more worried if lads weren't getting in there to miss chances."
Gavin Gunning put Dundee United ahead early in the match.
But St Johnstone got their equaliser two minutes after the restart when Peter Pawlett's cross came off home defender Brian McLean for an own goal.
"To concede so early, you either go under or you come fighting back and the lads, thankfully, came fighting back," said Lomas.
"I thought, second half, we were the most progressive team and probably should've got the victory.
"I was happy with the performance and nobody would've complained if we had gone down the road with three points."