It seems that you can't use a syntax like (*) to find and replace the constructions between the two parenthesis. The best thing that you can do is to search for one parenthesis, and modify the construction by yourself. In order to search for the parenthesis, you need to use the Wildcard option. To activate this option, open Micorsoft Word, press the Ctrl + F key combination to open the Find menu, and check Use wildcard option. After you did this, you will be able to search for the parenthesis. For additional information, check the following support website.