Keyword searching using keywords allows you to search

Keyword searching using keywords allows you to search for single words or phrases, combinations of words and phrases. In searching using keywords avoid using prepositions such as (the, of, to), and avoid using three special terms they are (and, or, not) these special terms will be used in conducting the search to get better results. To get the best results from your search you have to know how to do a keyword search it is invaluable for finding material on multi- disciplinary subjects which cannot be defined by searching one single word or phrase. Boolean search: Boolean search method was developed by George Boole, a nineteenth Century mathematician. Boolean searching can be used to define a topic very specifically, so that you can find what you need easily. Keyword searching using AND If you are searching for a very general topic that can be defined with only one word or phrase you don't need to use the Boolean search. If you are trying to search using more than one word or phrase you can use one of the principles of Boolean logic Using AND If you are searching for an article or study about crime and investigations. Crime And investigation

Using OR The Boolean expression OR broadens your search. You will retrieve more items. Your search result will contain all sources about crime and investigation. When you use OR between search terms, you specify that items must contain one term or the other, but they don't need to contain both. Crime OR investigation

Using NOT will narrow your search. The searching word NOT isn't used as often as AND or OR - use it with care so that you don't exclude useful material by mistake. You can use NOT to eliminate irrelevant terms or items retrieval. We can do a search for crime AND investigation NOT management, in this way we are excluding all results contains the word management. Crime NOT investigation management