The search2.xsd schema supports the import of common phrases.
Merchants can configure common phrases in multiple elements or as a comma-separated list in a single element. For example:
<common-phrases xml:lang="x-default">
<common-phrase match-mode="exact-match">ankle boots</common-phrase>
<common-phrase match-mode="exact-match">red dress</common-phrase>
<common-phrase match-mode="exact-match">infinity scarf, wool scarf</common-phrase>
</common-phrases>