How to force a search to display results

Hello I have three search addresses
1 city
2 address
3 postal code

how can I force search 2 and 3 to display the results according to the chosen city?

by using constaints in search.

I have searchboxs, is it the same?

So you have three search box.
And you want to use the result of city to decide the result on rest two boxes ?
Is this what you want to do ?

yes that’s right

Use conditional
When searchbox city is not empty
Then in property - change the data source and filter that with the searchbox city value