You have several options through which you can search the database. Click the downward arrow in searching box. You will get the options, e.g. Author, Title, Subject so on. Select your required one and press the enter key or click “Go”.
Then in the box type the name of subject you want to search.
You will find the catalogue of all the books on Nutrition. Now if you want to know the books on Nurtrition by any particular author then go to advanced search. There you will get options to relate different keywords e.g. Author and subject, Title and subject so on.