unless you know the reason(s) of refusal you cannot correct it in next application. So I agree with @canuck78 that getting GCSM notes would be the first thing you should do
So does that mean refusal of SOWP during study is because of funds? and approval rate is more while you have PGWP+job because you can afford to live in Canada as a family?
Inland - apply for visa while the person is in Canada and Outland means when person is in another country. Most of people get the visitor visa and go to Canada and then apply for SOWP there and that is why I asked about it.