Perhaps you should try some spelling variations:
crop adoption » crop adaptation
erp adoption » _ adoption, bpm adoption, 10 adoption
energy crop » energy crops
energy erp » energy ep, energy erec, energy e
energy era » energy e
energy end » energy e

You may be able to get more results by adjusting your search query.

• The words AND, OR and NOT may confuse the search; try adding quotes: "\"((((\\"energy crop adoption\\") or (\\"energy erp adoption\\"))) or (\\"((energy era) OR (energy end)) adoption\\"))\"".
• Removing quotes may allow a broader search: (((( energy crop adoption ) or ( energy erp adoption ))) or ( ((energy era) OR (energy end)) adoption )).