Group-Office has a powerful search function that will search through all items.
You can find it at the top bar:
When you enter words it will find results that match any of those words.
For example when searching for:
It will find anything with John or Doe.
If you want to search for a phrase then you can use quotes:
You can also use:
- for a wildcard.
- -word to omit results with this word.
Will find anything with a word starting with “John” but not with the word “Doe” in it.