I am an employed resident with company visa and applying for a student visa of Canada.
how can I make my refusal reason "ties with the resident country" and "purpose of visit" stronger for the next application
I think you should go and discuss your matter with good ( good means experienced , established, well known and so on , i guess you understood what i meant ) Immigration firm. They will guide you properly , mean time have a good study on spouse visa/ sponsoring / work permit from your side also.
**** Comments mentioned above are purely personal , kindly DO NOT take it as a professional advice