/descendant::Article[ descendant::AbstractText[ contains ( . , "plus") or contains ( . , "for")  ] ]%/descendant::Article/descendant::AbstractText[ . ftcontains "plus" ftor "for" ]
/descendant::Article[ descendant::AbstractText[ contains ( . , "plus") and not(contains ( . , "for"))  ] ]%/descendant::Article/descendant::AbstractText[ . ftcontains "plus" ftand ftnot "for" ]
/descendant::MedlineCitation/child::Article/child::AuthorList/child::Author[ child::LastName[starts-with( ., "Bar")]]%/descendant::MedlineCitation/child::Article/child::AuthorList/child::Author[ child::LastName ftcontains "Bar" at start ]
/descendant::*[ descendant::LastName[ contains( ., "Nguyen") ] ]%/descendant::*[ descendant::LastName ftcontains "Nguyen" entire content ]
/descendant::*/descendant::*[ contains( ., "epididymis") ]%/descendant::*/descendant::*[ . ftcontains "epididymis" ]
/descendant::*[ descendant::PublicationType[ ends-with( ., "Article") ]]%/descendant::*[ descendant::PublicationType ftcontains "Article" at end ]
/descendant::MedlineCitation[ descendant::Country[ contains( ., "AUSTRALIA") ] ]%/descendant::MedlineCitation[ descendant::Country ftcontains "AUSTRALIA" ]