It means "that you want"
Hablamos después cuando quieras We will talk later when (whenever) you want.
It means, "When you want [to]."
"quieras" is the subjunctive tú form (the informal "you" form) of the verb "querer" (to want). so it's "you want."
Whatever you want.
No me quieras tanto... was created in 1949.
Literally: Here you have me for what you want. "At your service", "I am here for you"
El Día Que Me Quieras - song - was created in 1994.
Lo que tú Quieras Oír was created in 2006.
"Even though you may not love me, I will keep on loving you"
The cast of Cuantas viejas quieras - 1990 includes: Enrique Gardiel
The cast of Como quieras - 1984 includes: Martin Motta Constanza Motta
The cast of Tomalo como quieras - 1971 includes: Luisa Huertas Rogelio Quiroga