Hi i have problems please help me?

im from here, canada toronto i was in venezuela for the vocations and i lived there like 2 years i knew a girl , she is my girl friend now she have 17 years old , and im in love with her, the problem is, that i have to return to canada again , but i want to bring my gf but i cant she need visa, what can i do ? please help me , i have 2 years with her, someone please tell me what can i do for bring my girlfriend and stay in canada with me , she is from venezuela, someone help?