hi,here i will research keyword for you,i have experience in blogging and research keyword,i using special method , i notice some aspect, the keyword search,CPC value,rival's pagerank etc,your pagerank etc. so it will become eective kayword for your site.
also i provide related search with same method,so i guaranteed the keyword will effective.
but i just can provide min 3 long tail keyword, for example :
your main keyword : " seoclerks"
i will provide : " seoclerks SEO services"
i guarantee the keyword effective for your site