Perhaps you should try some spelling variations:
"occasional papers, occasional prayers" » "occasional papers, occasional poems", "occasional paper, occasional prayers", "occasional poems, occasional prayers", "occasional verse, occasional prayers"
"occasional letters, occasional writer" » "occasional letter, occasional writer", "occasional notes, occasional writer", "occasional letters, occasional notes", "occasional letters, occasions written"

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 papers, occasional prayers") OR ("occasional letters, occasional writer")).
• Removing quotes may allow a broader search: (( occasional papers, occasional prayers ) or ( occasional letters, occasional writer )).
• Adding a wildcard symbol may retrieve word variants: (("occasional papers, occasional prayers") or ("occasional letters, occasional writer"))*.