Comparison the efficiency of some search engines on Arabic keywords and roots

This paper presents an attempt to show the efficiency of some search engines in dealing with Arabic keywords. This can be achieved by comparing the number of retrieved pages, retrieving time, and stability (in both the number of retrieved pages and the order for each retrieved page) for each one of the selected 20 Arabic keywords (with its roots) that were entered to the selected four search engines at the same time. Google, Yahoo, Al-hoodhood and Ayna were selected as a test bed for the experiment. The obtained results showed that Google was the best search engine among the four selected search engines, the experiments for the results of the stability of the selected search engines took 10 weeks to be obtained.