The <AND> tag allows you to use multiple filter statements
Here is an example
<FilterSelect xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="filter.xsd">
<Filter>
<And>
<ManageableDevice.SNMPProfileID type ="EQUAL">2026514</ManageableDevice.SNMPProfileID>
<IPDomainMember.IPDomainID type="EQUAL">3361820</IPDomainMember.IPDomainID>
</And>
</Filter>
</FilterSelect>