Here are some options for greeting people in the morning in Davao:
* Magandang umaga (formal) - This is the standard Filipino greeting for "good morning."
* Maayong buntag (informal) - This is the Cebuano greeting for "good morning," which is commonly used in Davao.
* Good morning (English) - This is also widely understood.
The choice of greeting will depend on the context and the person you are addressing. It's generally more polite to use the formal greetings in most situations.