The site can be searched in English here. There are over 44,000 clinical trials in this registry.
The site offers a fielded search option or a free text search option. Alternatively there is a list of trials.
Default operator AND
Boolean operators AND, OR
Phrase searching No
Nesting No
Truncation No
Field tags Fielded searches are offered.
Hyphens Hyphenated and unhyphenated terms seem to be necessary
Help pages No
Example AND selected: breast cancer searches for breast AND cancer
OR selected: breast cancer searches for breast OR cancer
Saved searches No
Export tagged No
Updated 13 April 2023