the majority of internet content is english/US, but of course there are some local content as well.
solution 1:
www.google.com.peof course, some results will still yield USA results if keywords are in english, as the results are almost totally dependent on your keywords.
solution 2:
"search term peru" or "search term lima"
but sometimes, as in my experience, it will yield hits from Peru, Indiana, or Lima, Ohio
try a combination of both, or be more specific with search terms

it's a hit and miss type of thing.