Is there a way to preselect values in a ComboBox?

I have a combobox with thousands of values. When entering data the values get filtered using diverse criteria. When entering the exact data, then exactly that entry is preselected (see picture1).
Now I would like to give additional info in the combobox (so that users get more information on what they can select). Now when entering the same data it is no longer exactly the same data as displayed in the combobox → nothing is preselected (see picture2).
Is there a way to preselect that value by code?
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