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

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 letters; occasional letter") OR ("occasional writer; occasional letter"))) OR ((("occasional papers; occasional letter") OR ("occasional papers; occasional notes"))))) OR ("occasional prayers; occasional letter")).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"occasional letters; occasional letter\") OR (\"occasional writer; occasional letter\"))) or (((\"occasional papers; occasional letter\") or (\"occasional papers; occasional notes\"))))) or (\"occasional prayers; occasional letter\"))".
• Removing quotes may allow a broader search: (((((( occasional letters; occasional letter ) OR ( occasional writer; occasional letter ))) or ((( occasional papers; occasional letter ) or ( occasional papers; occasional notes ))))) or ( occasional prayers; occasional letter )).
• Adding a wildcard symbol may retrieve word variants: (((((("occasional letters; occasional letter") OR ("occasional writer; occasional letter"))) or ((("occasional papers; occasional letter") or ("occasional papers; occasional notes"))))) or ("occasional prayers; occasional letter"))*.