My oven's max temperature is 200 degrees Celcius( 392 Fahrenheit). There are some baking recipes which ask for more than 392 F. How do I adjust the baking process then? Do I increase the baking time a little bit? 
If the recipe calls for 400°F, the difference is just rounding error and the normal process of checking when it should be nearly done (say at 3/4 of the stated cooking time, or just before the minimum if a range) will be adequate.  If the recipe calls for up to about 425°F (220°C) it will take a little longer. Be sure not to open the oven door too soon (i.e. not before the stated time).  If the recipe calls for much hotter than that, the chances are that even with extending the cooking time you'll get a slightly different effect, such as less browning on top or a less crisp base and you may need to experiment. 