I have a website about 'Virtualization' and I want rank for 'Virtualiaztion , Desktop Virtualizaiton , Server Virtualization and Newtork virtualizatoin' keywords.. I wrote long article about this topics in my services pages, and optimized them for this keywords, 1.should I use my home page as canonical URL for all this pages ?? 2.Is this action help to rank my home page for those 4 keywords or not? 3.Is it possible to rank one page for all of this keywords?