Hi There, Most of my keywords is made up of 2 words (phrasal keywords). So how can I make sure if google see them together? for instance "immigration usa", I do not want to be seen as " bla bla immigration" or "usa bla bla" Thank you.
I do not think there is no safe way to optimize this way. Google Reader semantic terms as much as possible and no penalty wise. Only Google AdWords feature key phrase. The only recommendation I can find is using words around your phrases carefully, can stop using words that can be processed by Google. As, immigration to the U.S. read like usa immigration. If you check the keyword density, you may not get an accurate picture as Google sees it because no tools keyword density there running with precision in view of Google. I suggest you focus on the use of terms based on best practices to optimize the page and rebuild ties with the exact phrase you want to rank for the particular page. This can work well.
If the 2 words are side by side Google will find them and if a search is done with those 2 words in it, then Google will consider your site for the rankings. If you want to rank for a particular search phrase, then make sure you include it in your meta title, article title and article body. that will increase your chances of ranking. You do not need to do anything else to let Google know these 2 words go together.