In your document, select the text you do not want to separate.
From the Common tab, click
on the arrow on the Line break 
button.
Click on the No break line command.
This command prevents a line break in the browser display. It can be useful specially when you want to avoid separating a string of words. The use of this command avoids you having to use the command BR (line break) and also having to find orphan words on a line displayed by the browser.
In your document, select the text you do not want to separate.
From the Common tab, click
on the arrow on the Line break
button.
Click on the No break line command.
The selected text will be inserted between the tags <NOBR> and </NOBR>.