LASS

(lass:compile-and-write
 '((:and
    (:or article section)
    (:= data-author (:or yukari ran chen))
    (:nth-child (:or 1 2 3)))
   :display none))

; =>

"article[data-author=\"yukari\"]:nth-child(1),
 article[data-author=\"yukari\"]:nth-child(2),
 article[data-author=\"yukari\"]:nth-child(3),
 article[data-author=\"ran\"]:nth-child(1),
 article[data-author=\"ran\"]:nth-child(2),
 article[data-author=\"ran\"]:nth-child(3),
 article[data-author=\"chen\"]:nth-child(1),
 article[data-author=\"chen\"]:nth-child(2),
 article[data-author=\"chen\"]:nth-child(3),
 section[data-author=\"yukari\"]:nth-child(1),
 section[data-author=\"yukari\"]:nth-child(2),
 section[data-author=\"yukari\"]:nth-child(3),
 section[data-author=\"ran\"]:nth-child(1),
 section[data-author=\"ran\"]:nth-child(2),
 section[data-author=\"ran\"]:nth-child(3),
 section[data-author=\"chen\"]:nth-child(1),
 section[data-author=\"chen\"]:nth-child(2),
 section[data-author=\"chen\"]:nth-child(3){
    display: none;
}"