Again we are talking about low float and high gap stocks with high relative volume (MACD above 0, and KDJ intersect going up), rest is pure garbage. Focus on those criterias I mentioned and go down the list of the scanner to find the ones that meet the criteria.
So the idea is to buy a stock when it has large gap and low float, and then the lines are in the right direction as well. This takes alot of experience and practice but eventually you will understand it.