- The 'Include all keywords' option will return researchers with all of the keywords in their research interests.

- The 'Include one or more keywords' option will return researchers with at least one of the keywords in the research interests.

- Use general keywords for more results and specific keywords for fewer results. For example, a search using the keyword 'soil' will return all records with the word soil or soils, but a search using the keywords 'soils' will only return records containing the word soils. A search for 'hydro' will return all records containing 'hydro' (hydrology, ecohydrology, hydrologic, etc.).