By Ellen Chang Sometimes stocks see big declines for obvious reasons, and sometimes because of intangibles. Companies frequently report better-than-expected sales and earnings. yet see their shares fall in the aftermath. A case in point is Coupa Software (COUP) – Get Coupa Software, Inc. Report, which Real Money Columnist Stephen “Sarge” Guilfoyle recently reviewed. The company reported adjusted EPS of $0.19 and generated revenue of $193.3 million during its latest quarter, which beat Wall Street estimates, resulting in year over year growth of 18.2%. While these numbers were a good reflection…