Find web page(s) that links to a specific page in Google Search

Question

I got an article from some page, I don't know which. Is there some Google search way of finding the parent page?

Say for example from page A I navigated to page B. Page B is a PDF document. How to instruct Google search to search for pages that link to page B?

Answer 1

UPDATE: The link: search operator support was removed.

Note: JohnMu is a Googler.

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The Google Search operator for searching web pages is link:. In other words link:docs.google.com.

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References
Search operators - Google Search Help

Answer 2

Just put your (part of it) text in " " like:

"I got an article from some page, I don't know which. Is there some Google 
 search way of finding the parent page?"

and search for it:

google.com/#q="I got an article from some page, I don't know which. Is there some Google search way of finding the parent page?"