I need to find all the same words in a text . What would be the best idea to do that? I used string.find but it does not work properly for the words. Let suppose I want to find a number 324 in the text '45 324 45324' there is only one occurrence of 324 word but string.find() finds 2 occurrences ( in 45324 too) Must I use regex? Thanks for help L.