Minecraft 1.13 (1.14) Scoreboard query multiple scores?

As above, I'm looking for a way to execute a command if multiple scores have 0. For example, score a and b must both have 0 for this to work. Have a total of 4 scores and find no way

In 1.14 you can do the following:

/ execute if
@ s [scores =
{ScoreName1 =
.VALUE1}] if
@ s [scores =
{ScoreName2 =
.WERT2}] if
@ s [scores =
{ScoreName3 =
.WERT3}] if
@ s [scores =
{ScoreName4 =
.VALUE4}] run {command}