search for: snowball_english

I'm using Xapian as a search back-end on a website. My client has certain search terms that the stemmer does not stem in a way they would like. For example "continuity" stems to "continu", which produces undesirable results in their application. Is there a way to override the stemming of certain words in a way that is compatible with the indexing stemmer and the query

...tlist.o .libs/libxapian.lax/liblanguages.a/snowball_dutch.o .libs/libxapian.lax/liblanguages.a/snowball_russian.o .libs/libxapian.lax/liblanguages.a/api.o .libs/libxapian.lax/liblanguages.a/snowball_porter.o .libs/libxapian.lax/liblanguages.a/snowball_norwegian.o .libs/libxapian.lax/liblanguages.a/snowball_english.o .libs/libxapian.lax/liblanguages.a/snowball_swedish.o .libs/libxapian.lax/liblanguages.a/snowball_italian.o .libs/libxapian.lax/liblanguages.a/snowball_german.o .libs/libxapian.lax/liblanguages.a/snowball_finnish.o .libs/libxapian.lax/liblanguages.a/snowball_portuguese.o .libs/libxapian.lax/libla...