How to use a Quick entry to get the right result with colon?
 

I have the following structure:

- Work (folder)
- IBM (folder)
- IBM: sign contract with Company 1 (project)
- IBM: sign contract with Company 2 (project)
- IBM: sign contract with Company 3 (project)
- Customer 1: agree on deadlines (project)
- etc. (project)

The problem is when I want to add a Quick entry to IBM folder with a project line like "IBM: sign contract with Company 4" I always end up with "sign contract with Company 4" in my project list. How should I put the right Quick entry line to end up with "IBM: sign contract with Company 4" instead? Please help!