Perhaps you should try some spelling variations:
"polye equation" » "cole equation", "pol's equation", "pulse equation", "poolye equation", "polyye equation"
"poll equation" » "pell equation", "pell equations", "pol's equation", "pooll equation", "polyl equation"
"pole equation" » "cole equation", "people equation", "pol's equation", "poole equation", "polye equation"
"pol equation" » "pool equation", "poly 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 ("poll equation"))) OR ((("pole equation") OR ("polye equation")))).
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"pol equation\") or (\"poll equation\"))) or (((\"pole equation\") OR (\"polye equation\"))))".
• Removing quotes may allow a broader search: (((( pol equation ) or ( poll equation ))) or ((( pole equation ) OR ( polye equation )))).
• Adding a wildcard symbol may retrieve word variants: (((("pol equation") or ("poll equation"))) or ((("pole equation") OR ("polye equation"))))*.