Use keywords to search for books and articles.
To get keywords, think about the main ideas of your topic.
For example: How do you care for an 8 week old puppy?
Remember, computers will search for every word that you type into the
search box, so try to keep your search simple - just a few words.
Now, let's take each of the main ideas (in red) and come up with some synonyms or related ideas:
care -- food, veterinary care, exercise, training
puppy -- dog, specific breed
Do this with your topic, and you will have some keywords to begin your search with!
Next, combine any one of the keywords from each group using AND.
1. puppy AND veterinary care
2. German Shepherd AND training
Different combinations of search terms will give you very different results, so you may want to try several different search strategies to see which gives you the best results.