Database search

I started the database search by looking into the Academic Search Complete. In order to avoid any possibility that I will exclude some useful articles due to inappropriate search key words, I tried to make use of 'OR'. My research topic is related to e-learning and its possible effects on students.
Inside the first search box, I put 'online learning OR e-learning OR internet learning'. In the second one, I put 'student*', such that the search can include 'student', 'students', etc. For the third box, I put 'motivate OR help OR effect OR influence'.
I found a few sources that sounds promising. There is a scholarly journal article titled 'The effect of computer-assisted learning versus conventional teaching methods on the acquisition and retention of handwashing theory and skills in pre-qualification nursing students: A randomised controlled trial', which is related to my reserch question to a certain extent since it relates e-learning with traditional teaching methods. There is another article titled 'Students' expectations of, and experiences in e-learning: Their relation to learning achievements and course satisfaction'. It basically covers an experiment done based on the relation between students' performance and e-learning.
Generally, I did not find it very difficult to find sources. However, there are sources that focuses on a particular group already. For example, some only stresses on whether e-learning help teachers teaching engineering students. Therefore, I am not sure how to draw relevent information from these sources.
On the other hand, most of the sources that I have found are scholarly ones, including scientific experiments conducted. I would like to find some popular ones which are for the general population.