From the Top Page
Enter a keyword in [Search] at the upper left of the screen → click [

].
From a Topic Page
Click the [Search] tab at the upper left of the screen → enter a keyword in [Keyword] → click [

].
Click [

Search Option] to set additional search conditions.
About Keywords
AND search: If you enter multiple words with spaces separating them, topics that include all of the entered words will be displayed.
Example: If you enter "paper size", the guide will search for topics that include both "paper" and "size".
Phrase search: If you enclose words in double quotation marks (" "), the guide will search for topics that include the quoted phrase as is.
You cannot use wildcards.