Regex: Add new empty line before/after some word - separated

[Vasile Caraus]

hello, please help me a little bit. I need a solution to add new line before and after some word or words - separated.

For exemple:

mom is home. WORD_1. Bla bla
father is alone with his papers. WORD_2 Bla Bla

I need a regex to add a new empty line before WORD_1. And I need a regex to add a new empty line after WORD_2.

[Vasile Caraus]

Add a new line After the word_2:

Search: WORD_2
Replace By: \n\nWORD_2\n\n

Add a new line Before word_1:

Search: WORD_1
Replace By: \n\nWORD_1\n

Read here more:
http://www.rexegg.com/regex-quickstart.html