You can achieve more accurate search results by using the following operators in your search query.
| Operator | Function |
|---|---|
| Space | Search for data that contains both search terms. |
|
lung cancer → Search for data that contains both "lung" and "cancer". |
|
| | | Search for data that contains either of the two search terms (at least one). |
|
lung | cancer
→ Search for data that contains either "lung" or "cancer". |
|
| ! | Exclude a specific term. Exclude data that contains the search term following NOT. |
|
lung !cancer
→ Search for data that contains "lung" but excludes "cancer". |
|
| [ ] | Search for data that exactly matches the phrase within square brackets. IUPAC name search, long phrase search |
|
[lung cancer]
→ Search for data that exactly matches the phrase "lung cancer". |
|
| ( ) | Grouping/precedence operator for complex queries. |
|
(bio
(lung | cancer)
)
→ Search for data that contains either "lung" or "cancer" and also contains "bio". |
|
| * | Partial match using a wildcard. Search for data that matches the pattern where * represents zero or more characters. |
|
canc*
→ Search for data that contains terms starting with "canc", such as "cancer" or "cancers". |