We want to look up relevant scholarly articles that have been done in many nations in Africa; the study aims to covers the entire continent. In the continent's nations, it is believed that a wide range of investigations have been carried out on the specific topic so far.
In the search engine (like Google Scholar), how could we search to get all the relevant scientific works?
(a) Country "X" + "Keywords" in the search bar? If this is the approach to be followed, we'll start looking for country by country for all African nations. This may take a longer time to search all the relevant articles in the continent.
(b) "Keywords" + "Africa" in the search bar? If we adopt this strategy, the word "Africa" might not appear in the article’s "Title" or "Keywords." Hence, we may miss relevant articles to be included for the metadata development?
(c) Only "Keywords" in the search bar? This strategy brings all studies worldwide. Then, we need to further screen studies which belongs to Africa?
(d) ???
Any suggestion please?
Thanks!