Perhaps you should try some spelling variations:
22occasional letter » occasional letters
occasional writer » occasional notes, occasions written
occasional letter » occasional verse, occasional notes
2f number » 22 number, 23 number, 29 number
21 number » 1 number, 22 number, 11 number
2 number » a number

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: %((((22occasional letter) OR (occasional writer))) OR (occasional letter)) %((((2f number) OR (2 number))) OR (21 number)) 1%22.
• The words AND, OR and NOT may confuse the search; try adding quotes: "%((((22occasional letter) or (occasional writer))) or (occasional letter)) %((((2f number) OR (2 number))) or (21 number)) 1%22".
• Adding a wildcard symbol may retrieve word variants: %((((22occasional letter) or (occasional writer))) or (occasional letter)) %((((2f number) OR (2 number))) or (21 number)) 1%22*.