It depends on you. If it fits your niche, then whatever you can find should be suitable. Don't go for too generic terms. Be sure that the keywords are what you are targeting. I know there are generic terms that have high clicks or views, and it's very tempting to get them. But you should consider the competition. It's tough to compete for keywords with very high competition. What you can do is start with the long tail keys which may not have that too high of a competition.
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