Perhaps you should try some spelling variations:
"occasional prayers; occasional letter" » "occasional poems; occasional letter", "occasional writer; occasional letter", "occasional prayers; occasional writer"
"occasional papers; occasional letter" » "occasional paper; occasional letter", "occasional poems; occasional letter", "occasional papers; occasional writer"

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