Would I look good as a Ph.D. applicant if abandon one graduate program and then pass from another program? See this question.


  
  Submitting a transcript which indicates an incomplete study (50/120 credits completed) and 5 dropped (not failed) courses.
  


See this answer.


  Honestly, unless there is some compelling reason ("My father died." "I was in the hospital with a broken back.") as to why you have so many dropped and uncompleted courses, there may not be a way you can just brush away your academic record into omission. There is not a great way to spin doctor this.


If I must complete my study, do I must complete it in the same university and country I started my study in?

The university from which I obtained 50 credits, is expensive and the country which this university is situated in, in hard to get a visa. So, I was thinking to resume my study all over again but in a country where it costs less and doesn't have visa issues.

Would I look good as a Ph.D. applicant if abandon one university program and then pass from another program?
Normally, yes, but there may be possibilities with a "sister" institution running the same course or similar course with the matching courses / modules where you could then move - of course this has to be accepted by both institutions.

Moving to a completely separate institution will normally mean a new course and the parts you have completed may go towards full or partial credit for the equivalent courses or modules. 

This would normally be evaluated on a case by case basis by the Dean / admissions officer or equivalent.

It is also very much dependent of which country or countries you are dealing with...