There are several synonyms for the phrase "strong corrective steps." Some possible alternatives include "vigorous corrective measures," "robust remedial actions," "forceful corrective interventions," or "powerful corrective tactics." Other related terms might include "decisive corrective strategies," "assertive corrective responses," or "effective corrective solutions." These phrases all convey a sense of urgency and assertiveness, indicating that significant changes must be made in order to address the issue at hand. It's important to choose the right synonym based on the specific context and tone of the communication, in order to ensure that the message is clear and effective.