Perhaps you should try some spelling variations:
"occasional preachers, occasional prayers" » "occasional preacher, occasional prayers", "occasional preaching, occasional prayers", "occasionally preached, occasional prayers", "occasional preachers, occasional poems", "occasional preachers, occasional writer"
"occasional papers, occasional prayers" » "occasional papers, occasional poems", "occasional papers, occasional writer", "occasional poems, occasional prayers", "occasional verse, occasional prayers", "occasional notes, occasional prayers"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("occasional preachers, occasional prayers") OR ("occasional papers, occasional prayers")).
• Removing quotes may allow a broader search: (( occasional preachers, occasional prayers ) or ( occasional papers, occasional prayers )).
• Adding a wildcard symbol may retrieve word variants: (("occasional preachers, occasional prayers") or ("occasional papers, occasional prayers"))*.