what should i do for ranking my keyword since it is crawl but does not improve my site ranking , please give a optimal solution.
You should hang yourself, simple as that. If you're too stupid to post in the correct sub forum, then I can only imagine how you do other things online..
what competition u entered? low, medium, high? it will be depen on it level, more higher the level, more works u have to do!
this is not the correct category for this question as james colin has already said. if your website is crawling but not increasing ranking then you should focus to create quality backlinks and content must be original. it will improve your ranking definately if you working on them.
I think your keyword selection is very bad, use some Google seo tools to improve the visibility. good luck.
More backlinks? over optimization may be harmful...won't it be good to build fewer but quality links considering PR and PA of the page where link is to be placed. This is my opinion...actually I'm bit confused after Google penguin and this is not the right section to discuss this topic