I wish to look up relevant scholarly articles that have been done in many nations in Africa; the study covers the entire continent. In the continent's nations, it is believed that a wide range of investigations have been carried out so far.
In the search engine (like Google Scholar), how could I search to get all the relevant scientific works:
(a) Country "X" + "Keywords": If this is the approach, I'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 I adopt this strategy, the word "Africa" might not appear in the article’s "Title" or "Keywords." Hence, I may miss relevant articles?
What is your suggestion, dear researchers?
Thanks.