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

Try widening your search to All Fields.

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• If you are trying to use Boolean operators, they must be ALL CAPS: (((("occasional papers, occasional prayers") OR ("occasional poems, occasional prayers"))) OR ("occasional drivers, occasional writer")).
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