My website url : http://www.unitechimaging.com How i can force search engine robots to crawl my site ? Still my site not yet indexed in google. I do linkbuilding also. Give me some suggestion.
You can submit your site's sitemap in Google Webmaster account and this will tell google to crawl your website.
You can't force it. If there is at least one link, or you submitted using the URL submit page then you'll just have to wait.
Have you already submitted your site to search engines? IF not, then you should use submitexpress.com to submit your site for free. Then I would suggest using a free tool called the website submitter on the imtalk.org forum. It submits your site to 2500 cubestat/who is sites. This generally helps with getting your site indexed quickly.
Follow these steps and you will get it indexed http://www.soloseo.com/blog/2007/11/26/7-steps-to-get-your-new-site-indexed-in-24-hours/
Crawlers visit a website from link to link and if your website has some quality backlinks, crawlers would find your your website and will index same soon