We recommend that you first start by trying to either search for yourself and or companies like you. What is important? Is location important? How would your customers find you.
Eventually, you will have a list of keywords and phrases. Keywords are broad in search results (the keyword dining would bring up dining around the world, and all types of dining) while search phrases result in a more specific search (fine french dining Finger Lakes Region New York) would result in a narrower search field, more particular to your specific needs.