persistence pays off. Also, don't just limit yourself to posted job ads. Often companies don't advertise or only do so internally. If you are interested in a specific field of work (say, Information Technology) check the websites of all the companies in your area or the city you would like to work in. Often their websites will list job openings or contact people. Sometimes sending resumes or just letters of introduction inquiring about future jobs, can get you noticed. Business newspapers are helpful, as they announce company growths/plans... if some company, say Mining, just recently expanded or received some grant to develop in an area, and you are interested in the mining industry, checking the website and sending a resume, could get you a job down the road, when they start 'using' that grant money.
Your University should also have advice and resources on how to find a job, how to build a good resume, interview skills etc. Also, look into any government sponsored job finding initiatives. Often, as a student, the government will pay the company who hires a student, a percentage of their wage, to encourage companies to hire students who won't have experience. This will give you on the job experience and often the company may hire you after the grant period expires. Be weary of companies with a high turnover rate, as they may just hire students and let them go as soon as they no longer qualify for any subsidy, to avoid having to pay out of their own pocket. Unless the particular job industry (ie call center) normally has a high turnover rate.