you can get the related keywords from google adwords keywords tool. Where you can find the high traffic volume keywords.
Just write few keywords in Google adword keyword tool which are relevant to your site and it will suggest you many more keywords and you can easily pick them out.
You can use Google adwords keyword tool to research the keywords for your website. You should search the keywords related to your website and services that you are offering.
For the purpose of searching effective and relevant keywords you may use Google keywords tool....... However, this tool will really help you to find out relevant and quality keywords........ which may help you to improve your website traffic and ranking.....
The most important factor of SEO is to select a right keywords. To select a right keywords and some related keywords you can use keywords research tools. Most popular is Google addwords keywords research tools. You can find related keywords by this tools. Thanks Farabi, Bangladesh.
For right keywords firstly read content and find out related keywords suggestion then after use Google Keywords generator tool to find out exact keywords which generate leads and traffic.