I was trying to locate the marriage record of Francisco Duran and Dorotea Lozano on family search.So they married on Feb 14 1776n in Nochistlan Zac ,Family Search seems to skip almost the whole year o

I was trying to locate the marriage record of Francisco Duran and Dorotea Lozano on family search.So they married on Feb 14 1776n in Nochistlan Zac ,Family Search seems to skip almost the whole year of 1776 and so I cannot locate their marriage record.So please if anyone can help locate this record.