Some of the articles you find in the library databases are not going to be in full-text format (PDF, HTML).
Instead, you may see this SJSU Find It link:
When you do, click it. If the library has the article in another database, you will see a link to that database. If the article isn't available here, you can request a copy of the article (for free!) through Interlibrary Loan (ILLiad).
To request an article, you first need to set up your own personal ILLiad account. The article will be delivered electronically to your ILLiad account in about 1-3 days.