Here's how you do it. For all the entries in the table that produce "1" (true), construct a sub-circuit where you AND all the inputs, inverting all the 0 inputs.
Next, you OR all the outputs of these AND circuits.
After that you could try to simplify the circuit before actually building it.
Say you have inputs a=0 and b=1 with output 1, this would result in a sub-circuit of NOT(a) AND b. You repeat that for each line in the truth table that has 1 as an output.
The resulting output would OR all these entries, like (NOT(a) AND b) OR (...other truth table line).
