Perhaps you should try some spelling variations:
"occasional papers; occasional letter" » "occasional paper; occasional letter", "occasional prayers; occasional letter", "occasional verse; occasional letter", "occasional papers; occasional writer", "occasional papers; occasional verse"
"occasional papers; occasional notes" » "occasional paper; occasional notes", "occasional prayers; occasional notes", "occasional verse; occasional notes"
"occasional poems; occasional letter" » "occasional poems; occasional writer", "occasional poems; occasional verse", "occasional verse; 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 papers; occasional letter") OR ("occasional papers; occasional notes"))) OR ("occasional poems; occasional letter")).
• Removing quotes may allow a broader search: (((( occasional papers; occasional letter ) or ( occasional papers; occasional notes ))) or ( occasional poems; occasional letter )).
• Adding a wildcard symbol may retrieve word variants: (((("occasional papers; occasional letter") or ("occasional papers; occasional notes"))) or ("occasional poems; occasional letter"))*.