Over the weekend I ran an IELTS preparation course here in Manchester. We did some good work on 'paragraph headings' questions, and one of the exercises that we used was test 2, passage 1 in Cambridge IELTS book 10.
Here are the keywords from the 'paragraph headings' section in that test:
Note: I always recommend doing paragraph matching questions last. They are much easier if you are already familiar with the passage, having done other question sections first.