Search form/engine

[eluser]someone [/eluser]
I have a form with search field, which search in database for some news/articles. When user enter some query, search form should find some news/articles from database. But in my case if user enter only one word for query there are results and if more words serperated with space, there are not results. I would like to search news/articles in case of one word or more of them serperated with space.

I have read the best way for searching in database is MATCH and AGAINST, but there is FULLTEXT index for field in table required. Tables in my database are InnoDB type and not other, where I could use FULLTEXT, but I would like to use InnoDB anyway.

What's the best way to do search form/engine with more words functionally?

Thanks! :-)