Use AND, OR, or NOT for combining terms with logic operators (Boolean operators must be ALL CAPITALISED). By default your search terms will automatically be combined using 'AND'.
Example search using AND:
metals AND analysis. This search will find records containing both metals and analysis.
Example search using OR:
light OR lumière. This search will find records containing either light or lumière.
Example search using NOT:
bleaching NOT paper. This search will find records containing bleaching but not paper.
Enclose a phrase in quotation marks to search for that exact phrase, for example: "lighting methods".
Use '*' to truncate (find variations of) a word, for example:
system*. This search will find records containing the terms systems, systematic, systematize