If you include inurl: in your query, Google will restrict the results to documents containing that word in the URL. For instance, [ inurl:logos site:www.googletruths.com ] searches for pages on Google Truths in which the URL contains the word "logos." It finds pdf files that are in the directory or folder named "logos" on the Google Truths website. The query [ inurl:healthy eating ] will return documents that mention the words "healthy" in their URL, and mention the word "eating" anywhere in the document.
Note: There must be no space between the inurl: and the following word.
Putting inurl: in front of every word in your query is equivalent to putting allinurl: at the front of your query, e.g., [ inurl:healthy inurl:eating ] is the same as [ allinurl: healthy eating ].
In URLs, words are often run together. They need not be run together when you're using inurl:.