When one looks for relevant literature, one turns to platforms such as Google Scholar or Web of Science. I want to search literature (or research articles) that include a specific mathematics equation. Is there a way?
Since you are mentioning mathematics in the tags: Besides the databases and engines you mention there are two other important ressources:
Both are exclusively for mathematics and extremely reliable. The zbMath actually has a search for formula (as mentioned in the comments - thought I flesh it out as an answer)! Check out the "Example" button besides the search bar, to get to know how the engine works. I have to admit, that I haven't used this for my work up to now, but the example work nicely.