php / sql search

[Kingmadee]

I want to find articles when searched on following keyword:"maruti sx4 maintenance costs against honda city"I want a query or php regular expression which can find a article which having below text "SX4 maintenance cost is lesser because of Maruti. Honda City maintenance is also okay."i.e i want a function/code which can find article by matching "maintenance cost" ( which is common text ) Please guide me how to do it ThanksSatish Kalepu