Direct Mail Addressee

[Vlad Kuzin]

When I pull property information from my county tax assessors office, owners names are shows in following format :

Example #1: MINNIS BRIAN A+LOKE-MOI CHONG

Example #2: BRAR IQBAL S+TEJ K

Example #3: LOCKE MARY+LOCKE ALAN

To get most results should I include both owners names on the envelope or just one? How about in the letter, should I insert names of both owners or just one in to the greeting line?