How efficient is your CV. If you are not getting interviews then concentrate on your CV. Look at this site for some guidance on CV
http://www.lulu.com/java-success. Just passing the certifications alone not going to get you a job. It is one of the accomplishments but not the only one. Try some of the popular frameworks like
JSF, Spring, Hibernate etc by trying some tutorials from the above site and then expanding on it to build a decent application. Once you have some experience with these frameworks then include them in your CV under skills section and possibly under experience (self-taught) etc. Try to standout from your competition.
good luck.