Emacs also has conventional nonincremental search commands, which require you to type the entire search string before searching begins.
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.
When you type C-s <RET>, the C-s invokes incremental
search as usual. That command is specially programmed to invoke
nonincremental search, search-forward, if the string you
specify is empty. (Such an empty argument would otherwise be
useless.) C-r <RET> does likewise, for a reverse
incremental search.
Forward and backward nonincremental searches are implemented by the
commands search-forward and search-backward. These
commands may be bound to other keys in the usual manner.