HAUSLER or HAEUSLER or HÄUSLER family

We are NO LONGER searching for

Miroslav HAUSLER, born 4 June 1949 and his sister Dana HAUSLER(OVA), born 18 October 1950. They are children of Venceslava HAUSLEROVA, nee JAN, (born 7 March 1929) and Miroslav HAUSLER, (born on 28 November 1923) The Parents of Miroslav HAUSLER were Anna, nee SACHROV[A], and Antonin HAUSLER. We have no idea where in the world they can be.

Please note - in the original documents the German spelling of the name is used, namly HÄUSLER.
In English speling this could be represented as HAUSLER or HAEUSLER

Do you recognize any of this?

Can you guide us in any way?

If you have no information, do you know of anyone else, anywhere, where we can ask?

Please e-mail me at searchandunite [AT] lewinsdlondon [DOT] org [DOT] uk