Searching on multiple checkboxes I've got a question that I can't seem to get fixed all by myself... I've got a search form and each entry has got field with some checkboxes (in this case these are options). Now I'd like to search when they check multiple checkboxes but I can't seem to get that to work...
I've set up a form in which I'm fetching a parameter and just to test it with 2 checkboxes checked I've split them up in 'week1' and 'week2' like so:

{% set week_search_query =  week1 ~ ' ' ~ week2  %}


I've tried the same with 'and' and '&amp;' in between the quotes but can't seem to get it to work, while with the 'week1' alone like so:

{% set week_search_query =  week1 %}


it works perfectly. (if I print out the content of 'week_search_query' in this case I get 


  weken2017:41


with weken2017 as fieldname and 41 as value). 
But what I'd like to to is search by 2 checked checkboxes at once as in the first example, so I can:

craft.entries.search(week_search_query)


All help is welcome, I feel like quite a newbie ATM :-)
Updating answer as question was updated

As I see it, you want to find any and all entries where the field weken2017 has either the value 42 or 43.

Assuming that I have understood this much correctly, {% set entries = craft.entries.search(['OR', 'weken2017:42', 'weken2017:43']) %}