Record the starting inputs
Before the first query, identify the known fields and leave the rest empty. This makes later changes understandable. Do not begin with a complete profile assembled from unsupported assumptions.
Add supported details
Refine with a new reliable detail rather than a random combination. Many results are not a reason to invent a birthplace. When nothing is found, first check whether an incorrect constraint was introduced.
Reset and start again
The supplied form includes Reset. It helps start a new parameter set without mixing information about different people. After resetting, check the selected fields and country before submitting again.