There’s a good introduction to concordancers in ELT on the British Council Teaching English website here:
https://www.teachingenglish.org.uk/article/concordancers-elt
Here’s an example of an online concordance
There’s a good introduction to concordancers in ELT on the British Council Teaching English website here:
https://www.teachingenglish.org.uk/article/concordancers-elt
Here’s an example of an online concordance