I have sleep apnea induced asthma and wondering if i can have nitrous oxide or general anesthesia for any procedures? i planning to have surgery soon?

Short answer is yes: Sleep apnea and asthma don't preclude surgery either individually or combined. What it does change is the manner in which the surgery should happen (inpatient vs. Outpatient), paying extra attention to triggers that can worsen each of the diseases for optimal post-operative outcome. As a patient you need to ensure you are as compliant and optimized on prescribed therapies as possible beforehand.

It depends...: The anesthetic technique depends on the surgical procedure you are undergoing. Some procedures can be done with local anesthetic (numbing drug injection) and/or sedation without the need for a general anesthetic. Nitrous oxide alone is usually insufficient for surgery.

Of course : You can. Make sure your condition is optimized (don't schedule surgery if you are actively wheezing)). A good anesthesiologist will be able to care for you safely.