It helps to narrow down and make your terms more specific.
For example if your research interest was freedom of speech and campaigns,
- First search your broader topic with your main keywords- freedom of speech AND campaign
- The results returned will have your keywords somewhere in the record.
- Examine other terms to find synonyms that might also work- for example these might work for this example:
- First Amendment
- Campaign Finance
- Campaign Laws
- With these additional terms, start to narrow down your search in order to get more specific results. For example, the next search could be: first amendment AND campaign finance.
> The result should be more items on your topic, with less searching.