How to optimize similar seo titles?

Hey. I have a question about similar titles. Already posted at webmasterworld but seems like forum kinda dead like many others.

Let's say we have a website that makes posts about the best car, real estate and let's say dating sites. Once you reach 50 posts, you're running out of titles, right?

For example, “best real estate website in Norway" and then next post will be "Where to look for real estate in Poland - Best websites".

What i mean no matters what but you will run in to same words...

How to optimize similar seo titles? WordPress ...