Drop-Down Boxes And Multi-Field Searches

I am designing a search query that will allow the user to look up a record in a database to view it. I have everything already set up, and most of it working properly.

The user can recall a database entry using 7 different criteria--Type, Customer, PartNo, JobNo, Warehouse, Bin, and Shelf. The Type and Warehouse entries on the database are drop-down values, the other 5 values are text entries.

So far, I have been able to get the look up query to pull up the desired records on the Customer, PartNo, JobNo, Bin, and Shelf criteria using

Code:
Like "*" & [Forms]![Search Form]![Customer] & "*"
.

However, with Type and Warehouse criterion, the two that use drop-down boxes in the database, I have been unsuccessful in being able to call up any records using either the above partial or the more exact:

Code:
=[Forms]![Search Form]![Type]

I did try to change Type to a textbox on the look up query, but that was similarly unsuccessful. On a side note, I must use drop-downs on the Warehouse field since I have another query that concatenates that value with a couple others.

How can I, without delving into VB coding unless absolutely necessary, format the lookup query so that it will read the values of the drop downs?