Be sure to access JSTOR through the Wolfgram A-Z Database, the ensures you have access the Full Text materials that we subscribe to.
You can put in phrases, keywords, authors or titles without any special formatting. This will give you a broader list of results that will, at least, allow you to peruse some options. If you're a more advanced searcher, you can put Boolean commands directly into the search bar or use the Advanced Search option.
How it works
NOTE: You can upload or point to many kinds of text documents, including: csv, doc, docx, gif, htm, html, jpg, jpeg, json, pdf, png, pptx, rtf, tif (tiff), txt, xlsx. If the file type you're using isn't in this list, just cut and paste any amount of text into the search form to analyze it.