Search for a whole word fails if word in text is preceeded by "-"

Hallo there,

I discovered a new "feature" by Adobe Reader. When I search for a Whole word, and if a word is preceeded by a "-" it lists it, although it shouldnt.

For example. Serached word : "Word".

In the results you will find something like "Wrongly-found-word, Wrongly-listed-word" etc.

How to exclude those cases ?

Thanks in advance,

B