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

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