Global.helma.Search.PhraseQuery.addTerm (field, str)
add a term to the end of the phrase query

Sourcecode in /home/hannes/helma/modules/helma/Search.js:
918:   this.addTerm = function(field, str) {
919:           var t = new Packages.org.apache.lucene.index.Term(field, str);
920:           this.query.add(t);
921:           return;
922:       }