Have you tried doing a Google search for the word "leverage"?
The top result is Wikipedia and it says this:
the exertion of force by means of a lever or an object used in the manner of a lever:
"my spade hit something solid that wouldn't respond to leverage"
synonyms: grip · purchase · hold · support · anchorage · force · strength
The next result is IMDB listing for a TV Show called "Leverage"
The next 10 pages of results, are either more info about the TV Show or sites for construction workers and building architects.
Not one single MLM site showed up in the first 100 search results.
This tells me that, not many people use the word "leverage" outside of building/construction and that the only reason the word "leverage" has good numbers in BrainStormer, is because people are looking for a TV show.
With that bit of information in mind, I would think, if you used just Leverage only without specifying Leverage in MLM, I would think MOST people who searched for Leverage would NOT be searching for MLM info and would quickly click away from you site.
Thus my end conclusion (what I would do if in this situation) would be to use "Leverage in MLM" instead of just "Leverage", because the average person (according to search results) is not thinking MLM when they search for the word leverage.