Perhaps you should try some spelling variations:
"poole equation" » "people equation", "cole equation", "boolean equation"
"pole equation" » "cole equation", "people equation", "pol's equation", "poole equation", "polle equation"
"poly equation" » "golay equation", "pol's equation", "pol equations", "pooly equation", "polly equation"
"py equation" » "key equation", "ray equation", "prey equations"
"pol equation" » "pool equation", "poll equation"

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: (((("pol equation") OR ((("pole equation") OR ("poole equation"))))) OR ((("poly equation") OR ("py equation")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"pol equation\") or (((\"pole equation\") OR (\"poole equation\"))))) or (((\"poly equation\") or (\"py equation\"))))".
• Removing quotes may allow a broader search: (((( pol equation ) or ((( pole equation ) OR ( poole equation ))))) or ((( poly equation ) or ( py equation )))).
• Adding a wildcard symbol may retrieve word variants: (((("pol equation") or ((("pole equation") OR ("poole equation"))))) or ((("poly equation") or ("py equation"))))*.