Perhaps you should try some spelling variations:
polyen » polyene, polyenes, poolyen, polyyen, poleyen
pol » pool, poly, pole
polele » poolele, polyele, poleele, polelle, polese, polece
polylen » poolylen, polyylen, poleylen, polyolen, polyle, polyblend
polyeylen » poolyeylen, polyyeylen, poleyeylen, polyethylen, polyetylene, polyenen

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: (((polyen OR (pol OR polele)) OR ((polylen OR polyeylen) OR post)) OR holds).
• Adding a wildcard symbol may retrieve word variants: (((polyen or (pol or polele)) or ((polylen or polyeylen) or post)) or holds)*.