Developing an efficient keyword strategy is difficult.
It isn't less difficult in Google, but the databases where our subscriptions live play by different rules.
In general, they ask you to be very specific and deliberate in your search.
You are not yet familiar with your topic. You do not know who cares about your topic and why.
You are not familiar with the ways in which experts talk about your topic and the solutions they are proposing.
The only way to fix this problem is to spend time becoming familiar with your topic (see Choose and Develop your Topic at left).
Here is one method for developing a strong keyword strategy. It helps you diagnose what you might need to know in order to launch a successful search.