You are already having a degree of B. Com ( Computer - application ) and this has enabled you to be familiar with the computer operating systems. But this alone would not be sufficient to land into the job of computer - professionals in a multinational companies.
But definitely, you may get a job in a medium type of companies.
Regarding your query whether you can take up any related course, my answer is affirmative.
The options are indicated below-
1) You can take up a regular MCA course from a reputed university. The course is of three year duration and you will be armoured with different application of Soft - wares. This could enhance your employability - status.
2) Work in a medium - sized soft - ware companies and earn experience and later, you may join TCS, Infosys, Wipro etc on the basis of your graduation coupled with your experience.
3) You may undertake short term specialised courses such as Java, Oracle, Red hat etc and passing out such certifications would provide you an edge over others in the job - market and you may fetch an attractive job in the field of Computers.