Scientific research is an essential step in conducting a credible research and writing an article. It is an art to choose the right articles from among the published sources on a specific topic related to your study. If not done properly, it can be time consuming, tedious and lead to apathy or even abandoning the search. Finding a scientific background is important because we know what others have done about it, how far they have come, and how they have worked so that we can continue our previous efforts and use the methods and results of those efforts to solve our problem .