5 Combobox to Select By Attributes From Joined Table

Hi Experts,

I created 6 combobox including attributes of joined data. I want to make a query like "select by attribute" by using the comboboxes.

I used many of the sample codes but I got some errors.

Can you help me about finding solutions to write a codes for querying like select by attribute function?

Note: I have another userform to select by attributes by using one of the fields on same layer.

I just want to use AND function to select attributes and in sixth combobox will choose null values or others to zoom after five combobox's choosen data.

I hope i would be clear enough.

Kindly Regards.