"finding and counting expressions from pdf files"

student24student24 Member Posts: 7 Contributor II
edited June 2019 in Help
Hello everybody,

is there any possibility to find a list words or expressions from pdf files and count how many times they appear?

I have a list of words I want to find in the texts. Also words who have to be together like "research and development"

Can anyone please help me?

Thank you
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