Let's say we have two files.

match.txt: A file containing patterns to match:

fed ghi
tsr qpo

data.txt: A file containing lines of text:

abc fed ghi jkl
mno pqr stu vwx
zyx wvu tsr qpo

Now, I want to issue a grep command that should return the first and third line from data.txt:

abc fed ghi jkl
zyx wvu tsr qpo

... because each of these two lines match one of the patterns in match.txt.

I have tried:

grep -F -f match.txt data.txt

but that returns no results.

grep info: GNU grep 2.6.3 (cygwin)
OS info: Windows 2008 R2

Update: It seems, that grep is confused by the space in the search pattern lines, but with the -F flag, it should be treating each line in match.txt as an individual match pattern.