Find Reversal Entry feature and 
Find in Lexicon are different.This Find Reversal Entry feature and Find in Lexicon are different.
Use the Find Reversal Entry dialog box to find a reversal entry in Reversal Indexes or Bulk Edit Reversal Entries.
On the Information bar, click the menu button 
, and then click the writing system that has the reversal entry you want to find.
Do one of the following:
On the Insert toolbar, click .
On the Edit menu, click Find reversal entry.
Press the shortcut keys Ctrl+F.
The Find Reversal Entry dialog box appears.
In the Find box, enter the form of the reversal entry you want to find.
The Reversal Entries area lists any reversal entries that match Reversal Form field contents.
If the desired entry is listed, click it. Then, click Go To.
The dialog box closes. That entry is selected in the center pane.
If no entry matches, do any of the following:
Change the Find contents.
Turn off any filters.
Consider if it the current publication should display it.
Click Cancel.
Use Find (Ctrl+Shift+F) to search for characters (optional).