Is there any specific site to get new keyword ideas?

[smz21]

Try using KWFinder, Longtail Keyword or Google Keyword Planner
In fact, these tools nearly the best

You can use:
1. Google keyword planner
2. Moz
3. Kwfinder

Hey, do you guys even read what the OP said?

No, Sir there are no site to find new keyword ideas you just have to look manually through your niche sites or forums or use any sophisticated tool to find them by tracking your niche keywords.