If you're looking for a particular company, place, concept, or product, start with just the name. Add zip code or name of town or other identifier if you need to narrow your results.
Use as few terms as possible. The search engine will use every term in your query statement. Too many words may limit the search too narrowly, eliminating potentially useful results. If you don't find exactly what you need, the results may provide additional word suggestions to refine your results with a new search.
Use the phrases most likely to appear on the page. For example, a scientific journal will likely use scientific terminology. A professional publication will use the jargon and acronyms of that profession.
Unique words and phrases are more likely to retrieve relevant results.