Which of these search methods is best when you are using literature references to find other relevant publications about your subject?

1. Snowball method

2. Keywords

3. Citation search

4. Search operators AND, OR and NOT

How can you define your subject precisely?

1. By searching with the operator OR

2. By searching with wildcards/truncation

3. By specifying a period in years

4. By using a synonym

How can you combine different search terms to form a phrase/concept?

1. By using the operator AND

2. By using the operator OR

3. By placing the words between brackets

4. By using truncation or wildcards