There are several synonyms for the phrase "systematic thoughts." One such synonym is "logical thinking," which refers to the ability to approach problems and situations in a structured and rational way. Another synonym is "methodical thinking," which emphasizes the importance of logical order and step-by-step processes. "Analytical thinking" is another synonym that emphasizes the ability to break down complex problems into smaller, more manageable parts. "Organized thinking" is a synonym that emphasizes the importance of structure and order in one's thought process. Finally, "strategic thinking" is a synonym that refers to the ability to think ahead and plan for the future, taking into account various factors and potential outcomes.