"https://stackoverflow.com/search?q=%s"
"https://cooking.stackexchange.com/search?q=%s"
"https://math.stackexchange.com/search?q=%s"
"https://english.stackexchange.com/search?q=%s"
"https://unix.stackexchange.com/search?q=%s"
"https://security.stackexchange.com/search?q=%s"
"https://crypto.stackexchange.com/search?q=%s"
"https://history.stackexchange.com/search?q=%s"
"https://mathoverflow.net/search?q=%s"
"https://emacs.stackexchange.com/search?q=%s"
"https://law.stackexchange.com/search?q=%s"
"https://politics.stackexchange.com/search?q=%s"
"https://cstheory.stackexchange.com/search?q=%s"
"https://www.merckmanuals.com/professional/SearchResults?query=%s"
"https://arxiv.org/search/?query=%s"
"https://citeseerx.ist.psu.edu/search?q=%s"
"https://dblp.org/search?q=%s"
"https://www.semanticscholar.org/search?q=%s"
"https://www.worldcat.org/search?q=%s"
"http://www.scholarpedia.org/w/index.php?search=%s"
"https://encyclopediaofmath.org/index.php?title=Special%3ASearch&search=%s"
"https://mathworld.wolfram.com/search/?query=%s"
"https://oeis.org/search?q=%s"
"https://www.google.com/search?as_q=%s&as_sitesearch=https%3A%2F%2Fncatlab.org%2Fnlab%2F"
"https://plato.stanford.edu/search/searcher.py?query=%s"
"http://www.wolframalpha.com/input/?i=%s"
"http://www.wikipedia.org/search-redirect.php?language=en&go=Go&search=%s"
"https://en.wikibooks.org/wiki/Special:Search?search=%s"
"https://www.wikidata.org/w/index.php?search=sseech&search=%s"
"https://commons.wikimedia.org/w/index.php?search=%s"
"https://en.wikinews.org/wiki/Special:Search?search=%s"
"https://en.wikiquote.org/wiki/Special:Search?search=%s"
"https://wikisource.org/w/index.php?search=%s"
"https://en.wikiversity.org/wiki/Special:Search?search=%s"
"https://en.wiktionary.org/wiki/Special:Search?search=%s"
"https://github.com/search?ref=simplesearch&q=%s"
"http://www.ctan.org/search/?x=1&PORTAL=on&phrase=%s"
"http://pretty-rfc.herokuapp.com/search?q=%s"
"http://rosettacode.org/mw/index.php?title=Special%3ASearch&search=%s"
"https://www.wikipedia.org/search-redirect.php?family=wiktionary&language=en&go=Go&search=%s"
"https://www.etymonline.com/search?q=%s"
"https://www.wordnik.com/words/%s"
"http://www.jurispedia.org/index2.php?cof=FORID%3A11&ie=UTF-8&q=%s"
"https://ballotpedia.org/wiki/index.php?search=%s