Yes. Through the Sympto-Thermal Method, it may be possible to discover the reason for your lack of success. The method will show if the woman is ovulating or not, as well as help identify other health concerns that could be affecting your chances of conceiving.
Also, by identifying the fertile days of the menstrual cycle, you'll be aware of when you are most fertile, which lets you maximize your chances of conceiving. Past studies indicate that couples were, on average, more successful in achieving pregnancy sooner when they learned, with the help of a teacher-couple, how to discern the period of ovulation.