Looking for a job

I feel your pain - unfortunately it's really difficult for us non-EU citizens to find work in the Netherlands.  This is because before an employer can hire you, he/she has to prove to the government that every effort was made to find a Dutch person to fill the position and, afterwards, a European person.  What kind of visa do you have?  If you are legally allowed to work without a TWV (work permit), you could just walk into stores with your CV and visa.  You can also check marktplaats.nl.  Good luck!

Also just wanted to add that you will probably have more luck in person than on the internet.  Try independently run places, they tend to be less stringent with their online application processes and bureaucratic policies!