(MSWord VBA) Add " symbol to search string

I'm trying to get a simple macro to work in MS word. The macro is supposed find a definition in contracts. These are typically marked within quotes (e.g. "Definition"). Hence, I want to select a word that I want to search the definition for and execute a search for the selected term in quotes.

However, for some reason, I can't get it to work reliably. I've gone through the code debugging it, but the MySearchTrim variable ends up just containing

""selectiontext

while I would need it to be

"selectiontext"

I've tried it with inserting the quotes by adding the quotes through

&"""

but it only worked in 30% of the cases, which I find very confusing.

Can anyone help me spot the error?

Thanks!

Sub GehZuDefinition()

Dim MySearchterm
Dim MySearchTrim As String
Dim myWindow As Window
    
    MySearchterm = Selection.Text
    MySearchTrim = Chr(34) & Trim(MySearchterm) & Chr(34) ' trimming spaces after searchterm that are typically selected
    
    Selection.Find.ClearFormatting
    With Selection.Find
        .Text = MySearchTrim
        .Replacement.Text = ""
        .Forward = True
        .Wrap = wdFindContinue
        .Format = False
        .MatchCase = True
        .MatchWholeWord = False
        .MatchKashida = False
        .MatchDiacritics = False
        .MatchAlefHamza = False
        .MatchControl = False
        .MatchByte = False
        .MatchWildcards = False
        .MatchSoundsLike = False
        .MatchAllWordForms = False
    End With
    Selection.Find.Execute
    
End Sub