Can't search for words that has . (dot) and / (foward slash) on it.

Steps to reproduce:

1. Create a page.
2. Type 10.1.1.1 and save the page.
3. Search for 10.1.1.1, you can find just fine.
4. Open the same page, create a new entry with: 10.1.1.1/25
5. Search for 10.1.1.1/25, you won't find anything.
6. Open the same page, create a new entry with: 10.1.1.2\23
7. Search for 10.1.1.2\23, you can find just fine.