Looking for some part-time jobs

The holiday is coming; I’ll have four-month time to earn as much money as I can to pay some of the heavy tuition fee. During these days, I intent to go to some local supermarkets like Tesco, Asda, Somefield and so on. Of course before that, I should do some prepares so that I’ll get more chances to have interviews. I am a little disappointed about what I did these months – improve little in speaking English and earn little money during this period. I had tried my best to phone the employers, but no response returned, the main reason I think is no prepare I did and poor English I spoke, so now I’ll practise more English and try the jobs again. Hope a good result.