Literature Searching

Hi, (sorry i originally posted this in the sports physio bit, without realising)

I am just writing to enquire, I am about to embark on writing my dissertation, well need to do the lit searching first, however I am looking on the search engines and finding lots of articles relevant to my topic title. The only problem is, that, my university athens subscription isnt allowing me to view full articles or some articles are asking for payments.

I have found many articles that i would be interested in reading up and hoping they would be suitable for my lit review, however i dont want to order any through the uni, which would cost, to then find they are really not suitable, so you can see my predicament.

Does anyone know of any other places or sites that i may be able to view these articles as a universal thing, rather than needing a certain university subscription?

Thanks for you help.