Contains Search Type
The contains search type is supported by the GET /{custid}/titles endpoint. It can be used with any of the search fields. The contains search type performs a "MATCH" query equivalent of an AND between each search term. When you would like the search result to contain all of the search terms, the contains search type is needed. For example, use searchtype=contains and search=sleep walking to find results that refer to both sleep and walking.
To Use the Contains Search Type (example):
Request
GET https://sandbox.ebsco.io/rm/rmaccounts/CUSTID/titles?search=sleep walking&searchfield=titlename&selection=0&resourcetype=0&orderby=0&count=100&offset=1&searchtype=contains