Here are some possible meanings of "quiera" depending on the context:
* Want/wish: "El niño quiera comer helado" (The child wants to eat ice cream).
* May/might: "Ojalá quiera venir a la fiesta" (Hopefully he/she will come to the party).
* Please: "Quiera Dios que todo salga bien" (Please God, let everything go well).
It's important to remember that "quiera" is a subjunctive form, so its meaning is usually influenced by the surrounding context.