1.   Ben struggled to find the right words.

2.   He often fumbles for the right words to explain his policies.

3.   He struggled for the right words to say.

4.   He struggled to find the right word.

5.   He thinks this keeps him on his mettle, but it often leaves him at a loss for the right word.

6.   In fact, the morale of the crew was very high, if morale was the right word.

7.   Mrs Cigans has listened to me on the bus and told me they are the right words.

8.   Paul started to speak but hesitated, searching for just the right words.

9.   That is exactly the right word.