Can MDM web service search results be filtered by tuple values?

We are currently working with MDM 7.1 SP03 and Netweaver 7.0. Right now, there is a requirement to return a material record from MDM to a Web Dynpro form using the MDM search web service. The other requirement is that the form user can search for a material using material number, sales org and dist channel. Currently, the results include all sales org/dist channel combinations in the material record. Is there a way to filter the results so that only the specified sales org and dist channel are returned to the form by using the web service? For example, if a material record has 2 sales orgs with different dist channels and the user is only interested in one, is it possible for the web service to return the material record and only the one sales org? Or, does this need to be handled by the form? Thanks for any input.