(code bad smell OR code smell OR bad smell OR "design issue" OR "design problem" OR antipattern* OR anti-pattern* OR 
 duplicat* code OR duplicat* OR clon* OR 
 long method* OR method length OR 
 large method* OR large class* OR class size OR
 long parameter list OR divergent change* OR
 shotgun surgery OR feature envy OR  data clump* 
 OR primitive obsession OR switch statement* OR
 parallel inheritance hierarchies OR lazy class
 OR speculative generality OR temporary field
 OR message chain*  OR middle man OR 
 inappropriate intimacy OR 
 alternative classes different interfaces OR
 incomplete library class OR data class OR
 refused bequest OR comment ) 
AND (software) 
AND (quality OR maintain* OR mainten)