The RIVM search engine looks for all words in your search query. It is not necessary to include ‘AND’ between your search terms.
An asterisk (*) can be used as a wildcard. For example, the
search term biolo* will find all documents which contain the words
biology, biological or biologist.
The search is not case-sensitive: using lower case letters will return the same results as when you use upper case or capitalize a word.
You do not have to enter special characters such as accented letters or diacritical marks in order to find words which contain them. A search for ‘café’ will also find all instances of ‘cafe’.
If you enclose two or more words between double quotation marks,
e.g. “environmental disaster”, the search engine will look for that
exact phrase only.
In complex search strings, keywords can be grouped by placing them between brackets ().