Perhaps you should try some spelling variations:
"rhetoric poetry" » "rhetorick poetry", "rhetoric history"
"heroic poetry" » "erotic poetry", "heroic poem", "lyric poetry"
"eric poetry" » "erotic poetry", "lyric poetry", "etc poetry"

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: (((("eric poetry") OR ("epic poetry"))) OR ((("heroic poetry") OR ("rhetoric poetry")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"eric poetry\") or (\"epic poetry\"))) or (((\"heroic poetry\") OR (\"rhetoric poetry\"))))".
• Removing quotes may allow a broader search: (((( eric poetry ) or ( epic poetry ))) or ((( heroic poetry ) OR ( rhetoric poetry )))).
• Adding a wildcard symbol may retrieve word variants: (((("eric poetry") or ("epic poetry"))) or ((("heroic poetry") OR ("rhetoric poetry"))))*.