Merging 2 Entries Array's I have these to arrays that I need to merge into one array, but can't figure it out.

Please advise

{% set entries = craft.entries.section('publications').search('nonMembers:0') %}

{% set entries = craft.entries.section('improveYourClub').search('membersExclusive:1') %}
Just a few side notes: 


neither the first entries variable nor the second entries variable is an array - both are objects of kind craft\elements\db\EntryQuery (or craft\ElementCriteriaModel if it's Craft 2).
.search('nonMembers:0') can be shortened to nonMembers(0) (or "0" or "not 1" depending on the type) and search('membersExclusive:1') to membersExclusive(1) it will increase your performance as well


So far about that.. You can merge arrays in Twig via |merge filter

{% set values = [1, 2] %}

{% set values = values|merge(['apple', 'orange']) %}

{# values now contains [1, 2, 'apple', 'orange'] #}




EDIT:

To address your case specifically, you'll need something like this...

{% set entriesOne = craft.entries.section('publications').search('nonMembers:0').find() %}
{% set entriesTwo = craft.entries.section('improveYourClub').search('membersExclusive:1').find() %}

{% set allEntries = entriesOne|merge(entriesTwo) %}