hongkong visa longer than 14 days

hello, been to hongkong for 3 times. first time was just 1 day, 2nd time was just 3 days and third time was for 12 days as tourist. i plan to take a 3 months vacation leave from work and go to hongkong to spend my 3 months vacation. is it possible to apply for a 3 months visa? coz normally, we are just given 14 days there right? i dont have a sponsor to invite me, i just have a passport. im hoping u could give me an advice here coz i dont like being in trouble at the immigration so want to have proper documents. or even just a 1 month visa...