Google is so evil that it "hides" other search systems from us. Most of them we simply do not know exist. Meanwhile, there are still a ton of great search engines out there that specialize in books, science, and other smart information. Keep a list of sites that you may have never heard of. - a search engine for academic resources. More than a billion sources: encyclopedias, monographs, magazines. - a search for the contents of 20 thousand world libraries. You will find out where the nearest rare book you need is. - access to more than 10 million scientific documents: books, articles, research records. is a library of scientific journals on bioscience published in developing countries. - volunteers from 102 countries have collected almost 4 million publications on economics and related sciences. is an American state search engine for 2200+ scientific sites. More than 200 million articles are indexed. is the largest site for free download of books in PDF format. More than 225 million names are declared. is one of the powerful search sites for academic research texts. More than 100 million scientific documents, 70% of them are free
ностр уже решает эту проблему... гугл и другие теряют смысл... представь систему где ответ на твой вопрос имеет 100% верный результат не зависимо от сложности вопроса?