Search Multiple Keywords

I would like for keyword search options to allow for Use AND/OR logic.

For example, I would like to be able to search for "Robots" or "Philanthropy". Currently, via they keyword search "Robots" only returned 13 results, "Philanthropy" only returned 48 results and "Robots Philanthropy" returned 0 Results. I know I could do this with two individual "contains" filters, but that is (a) much more cumbersome and (b) does not search across all fields. We're hoping that we can generate both results for "Robots" and "Philanthropy" combined when searching both keywords all at the same time. (61 results)