In the healthy development of verb-object phrases, health is the predicate and development is the object. Development is the goal of health; Verb-object phrase is one of the structural classifications of phrases, and it is a structure composed of two components with "dominance and relevance": the predicate comes first and the object comes last. The object is the object dominated or linked by the action or phenomenon indicated by the predicate. So healthy development is a verb-object phrase.
Other common types of phrases include subject-predicate phrases, radical phrases, middle-complement phrases, joint phrases, conjunction phrases, conjunction phrases, part-time phrases, appositive phrases, locative phrases, prepositional phrases and so on.