No. That is horrible advice. Because of all those hits and all that new credit you look like a credit risk.
The number of hard pulls on your credit brings down your score a little. The amount depends on the pattern and how much other credit you already have. Since it sounds like you had no or little credit and you just went on an application frenzy that likely took 20-40 points off your credit score.
Second issue is length of credit history. This is a major factor and it is a combination of how long you have had credit and your average credit length. Getting a whole bunch of new credit brings down your average length. This is likely going to cost you another 20-40 points.
All you can do not is wait. If it was only two cards then maybe applying for a VISA with low standards would be possible but now you are up to 4-5 new cards. I'd say wait at least six months or more realistically 12-18 months.