I am looking for information about Wal-Mart's strategies, ethics and relationships with stakeholders.
The Library has a business research guide (http://library.uhd.edu/business) and it includes a section on company and industry resources, which you can go straight to at
I would recommend you try MarketLine Advantage, and look up Wal-mart. Select "Companies" from the drop down menu. Wal-mart Stores should be listed first. Especially of interest for your subject area is the SWOT Analysis, which is linked in the right column. Strengths, weaknesses, opportunities, and threats will have some information on your topics, although it might not be couched in exactly your terms. You may also want to look at other resources listed in the company section of the business research guide.
Your topic is also one that is covered in print and e-books that the library has. If you don't want to come to the library, you can access the e-books online. To find items that UHD has on Wal-mart, go to the library catalog at http://library.uh.edu/search~S14 , select "Advanced Search", and enter wal-mart, then choose "Limit to UHD" from the drop-down box to the right of the search box. You'll get a list of items, and you can look in the right-hand column to see if they're books, e-books, or films.
Finally, there should be plenty of articles about your topic in ABI/Inform and Business Search Complete, two article databases they library subscribes to. You can get to these from the first page of the business guide linked above. In both of these, you could search wal-mart, then in the second search box enter: Ethics or responsibility or stakeholders. In both databases, to find items that have the entire text included online, look for the ability to limit to "full-text."