Hi, I am planning to buy couple of backlinks for the keywords: dining set dining furniture dining room furniture Can I combine all the keywords into "dining room furniture set"? Or is it better to do each keywords separately: "dining set", "dining furniture", etc. Thanks in advance.
Personally i'd research on Overture and see which keyphrase gets the most searches and use that. If nobody searches for "dining room furniture set" it's not really beneficial to target it. Four words is ok in an anchor, but i don't like going much more then that. Also vary your anchor, like 50-60% to the primary anchor, 20-30% to the secondry etc as it's more natural and helps you to rank for different combinations of phrases.
You can target all of those keywords in one anchor text without any problems from the engines. I would use Dining Room Furniture Set as the anchor text.