Basta pressionar Return após C-s e depois colar a string de pesquisa:
Emacs also has conventional nonincremental search commands, which
require you to type the entire search string before searching begins.
'C-s <RET> STRING <RET>'
Search for STRING.
'C-r <RET> STRING <RET>'
Search backward for STRING.
To start a nonincremental search, first type 'C-s <RET>'. This
enters the minibuffer to read the search string; terminate the string
with <RET>, and then the search takes place. If the string is not
found, the search command signals an error.