[TYPO3-mvc] Need help with search form

[Mam Violeng]

Hi All,

I have one form with a keyword text box to search the keyword through 
the fields in the table (more than 5 fields). I was wondering if extbase 
also provide some function similar 
GLOBALS['TYPO3_DB']->searchQuery($searchWords, $fields, $table) or not.

Please give me some hints. I also have one more question regarding using 
$query->statement($statement, $parameters, $language) I don't what this 
function do, and how to use it, anyone has any real examples how to use it?

Thanks in advance.

Regards,

Violeng Mam