I use swish-e 2.4.2.
Config:
	WordCharacters  &.-_0123456789abcdefghijklmnopqrstuvwxyz
	BeginCharacters 0123456789abcdefghijklmnopqrstuvwxyz
	EndCharacters   0123456789abcdefghijklmnopqrstuvwxyz
	IgnoreFirstChar &.-_
	IgnoreLastChar  &.-_
	Buzzwords C++ TCP/IP C#
	MinWordLimit 2

Problem 1:
	Buzzwords don't add to index because MinWordLimit=2. 
	When MinWordLimit=1 Buzzwords adds to index.

	I think Buzzwords must adds to index without any limits.

Problem 2:
	swish-e -w 'C' be found
	swish-e -w 'C++++' be found
	swish-e -w 'C####' be found
	I think it's a bag because in index saved only 'c'.