Google is not the only search system and so if you want to be comprehensive in your search use other search engines. Here are a number of excellent search engines you may have seen or used.
www.refseek.com - Academic Resource Search. More than a
billion sources: encyclopedias, monographs, magazines.
www.worldcat.org - a search for the contents of 20
thousand worldwide libraries. Find out where the nearest rare book you
need.
https://link.springer.com - access to more than 10
million scientific documents: books, articles, research protocols.
www.bioline.org.br is a library of scientific
bioscience journals published in developing countries.
http://repec.org - volunteers from 102 countries have
collected almost 4 million publications on economics and related science.
www.science.gov is an American state search engine on
2200+ scientific sites. More than 200 million articles are indexed.
www.base-search.net is one of the most powerful
researches on academic studies texts. More than 100 million scientific
documents, 70% of them are free
DuckDuckGo They do not track your activities at ALL. There are no
ads.
Google Scholar
can be useful for academic searchers
Ecosia is a search engine based in
Berlin, Germany. According to Ecosia, it is CO2-negative, supports full
financial transparency, and protects the privacy of its users. History Ecosia
was launched on 7 December 2009.
Ask have a question you may find your answer
here.
JSTOR A digital library specializing in academic
journals, books, and primary sources across various disciplines, including
arts, humanities, social sciences, and sciences. It provides access to a vast
collection of scholarly resources for research and academic purposes.
PubMed
A search engine by the National Institutes of Health (NIH) that specializes in
biomedical literature, including research articles, clinical studies, and
reviews. It's a valuable resource for medical professionals, researchers, and
students in the field of health sciences.
IEEE Xplore Digital
Library A database focusing on technology and engineering research,
including journals, conference proceedings, standards, and eBooks. It covers a
wide range of topics in electrical engineering, computer science, and related
disciplines.
