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 » 2 number, 21 number, 23 number
22 number » 2 number, 12 numbers, 2.4 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 (22 number)) 1%22.
• Adding a wildcard symbol may retrieve word variants: %((((22occasional letter) or (occasional writer))) or (occasional letter)) %((2f number) or (22 number)) 1%22*.