Use AND / OR to join search terminology.
- OR - joins similar terms / terms that get at the same issue - BROADENS
- AND - joins dissimilar terms - NARROWS
Examples: Using OR
- "phospholipid bilayer" OR "cell membrane"
- Covid OR "sars-cov-2" OR "coronavirus 2"
- "PCR" OR "polymerase chain reaction"
- "Caenorhabditis elegans" OR "C. elegans" OR "roundworm"
Examples: Using AND
- "virus" AND "mRNA"
- "regenerative medicine" AND "stem cells" AND tissue
Examples using AND & OR
Sample Search A
"sars-cov-2" OR "Covid 19"
AND
"wastewater surveillance"
Question: What strategy might we take if Sample A returns too many results? How could we modify this search?