Hi guys, I'm saying SEO on Google.com.vn with 2 keyword phrases have same sense: 'dich vu SEO' & 'dịch vụ SEO'. These keyword phrases see different but they have same sense in my country. I want to rank for both those keyword phrase for one url http://mydomain.com/dich-vu-seo.html. I sure when i search 'dich vu SEO' & 'dịch vụ SEO' will display different position on SERPs. So if i want to rank both of them, how to i can build backlink for them, i have to put anchor text contain both keyword phrases or only need one keyword phrase like 'dich vu SEO' or 'dịch vụ SEO' ? Thanks in advanced