do directory submission on particular keywords what you want.and do article submission on that keywords,do forum.hope so it will helps you in ranking of your keywords
create profile in sites with name of keyword and put your link in it......do directory submissions,article submissions ,signatures in forums with anchor text nd do spend money on buying links in some good sites
You want result in just a month. What is the age and overall backlinks of your website. If it is aged domain with many quality backlinks. It is little bit possible. If it is new domain then not possible in a month even if you purchase links from high pr websites. It will take some time 3-6 months.
It is possible with a new site. I have a .net less than 6 weeks old now ranking number 1 on google with over 5 million competitiors. You need to build backlinks, from wherever you can get them, make sure your site is keyword rich and post good content. Make sure your pages title includes your required keywords and inform all the major search engines. Read as many posts etc. which contain info on SEO
If you want more keyword in rank within one month then first thing you need to select those keyword which has less competition but good in traffic, so you can do rank within one month but make sure your strategy should be effective at any manner.
Whether your domain is old or new. It doesn't matter. Just do competitor analysis for the keyword and then go for on page and off page work..
To improve ranking on your desired keyword,s get quality backlinks from relevant sites. If you are good at writing, write articles with unique content and with your keywords in article title and in body text. This would bring good results in the form of backlinks and traffic. Make sure that during the process, you don't stuff keywords and avoid using black hat techniques like spamdexing and buying bulk links (1000s of them). Good luck,
You can write lots of quality articles using your target keywords and then publish them on various submission sites online and submit them to all social bookmarking sites, and rss feed directories. You can also participate in forums and create a signature using your priority keywords.
Do more work. Same process that you have applied for those keywords which already ranked. Seo is not creating new techniques everyday.