TITLE: How to google search mathematical notions and expressions?
QUESTION [24 upvotes]: It is usually not difficult to google search mathematical notions; for example, one can search (with quotation marks) the term "brunnian braid" and find the definition and other related materials. Occasionally some math terms are difficult to google search directly as the same expression is widely used under different meaning by people from other fields. One such example is "Johnson filtration"; other more familiar examples include "support", "almost everywhere", "ideal", etc. Is there any solution to this situation?
To me, some expressions are almost hopeless to search with google. For example, I have no idea how to search $e^{i\pi}+1=0$ unless I know the name of the identity. Another example is to search $E_0^*(G)$, which is the graded Lie algebra associated to a discrete group $G$. Unless one knows the name of the terminology, how can one google search $E_0^*(G)$?

REPLY [3 votes]: Approach Zero: A math-aware search engine.
This search engine supports LaTeX and currently searches through Mathematics StackExchange and ArtOfProblemSolving (AOPS). I use this everyday for searching my Homework questions.