Yes, there are several techniques that can help enhance your comprehension speed using previous years' papers for Commerce. Here are some suggestions:

1. Skim through the paper: Before attempting to solve the questions, skim through the entire paper to get an idea about the topics covered and the types of questions asked. This will help you mentally prepare and prioritize your efforts.

2. Understand the question patterns: Analyze the pattern of questions asked in previous years' papers. Look for recurring themes or common types of questions. This will give you a better understanding of what to expect and help you prepare accordingly.

3. Solve questions under timed conditions: Set a time limit for each section or question while solving previous years' papers. This will help you build speed and train your mind to work efficiently within a given time frame.

4. Practice active reading: When reading the questions, actively engage with the text and try to comprehend the information quickly. Highlight or underline key points, keywords, or phrases that will help you answer the question more efficiently.

5. Practice with a timer: Set a timer while solving previous years' papers to simulate exam conditions. This will help you get accustomed to managing your time effectively during the actual exam.

6. Review and analyze your mistakes: After solving the papers, thoroughly review your answers, and identify the mistakes you made. Understand the correct approach to solving the questions and learn from your errors to avoid repeating them in the future.

7. Focus on weak areas: Identify the topics or areas where you face difficulty or take a longer time to comprehend. Focus more on practicing questions related to those topics to improve your speed and understanding.

8. Take mock tests: Take timed mock tests using previous years' papers to simulate the actual exam environment. This will help you assess your progress, identify areas of improvement, and further enhance your comprehension speed.

Remember, regular practice and consistent effort are crucial to improving comprehension speed. Gradually, with practice, you will become more familiar with the question patterns, develop better time management skills, and enhance your overall comprehension speed.