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searches over 700 websites that have datasets to download
["data", "dataset, "survey"] have been included to filter results further
results are grouped by site and ranked by relevance
add words that focus your topic
if your topic has a very unique word, like "zika", it may be all you need
if you're not finding anything here try google on you own. examples: "greenhouse gas" data?set site:epa.gov humanities data?set "political risk" data?set longitudinal survey site:ed.gov