Only about half of the positions in Denmark are advertised on job boards. The remaining half of jobs are filled via unsolicited applications, word of mouth, and networks. Therefore, it can pay off to also focus on unsolicited applications and to reach out to relevant companies directly.
In Denmark, it is often considered a good practice to call companies and speak to a hiring manager or the HR department. Most companies will be happy to answer your questions if they are relevant.
For example, you can ask companies about potential future plans, about their prospects for expansion in the coming years, if they aim at new markets or how they prefer unsolicited applicants to apply. In many cases, you will end up with the email for the hiring manager and the possibility to send your CV directly. If so, make sure to referernce your conversation.
If your questions are relevant, they might even ask about your profile on the phone and thus offer you a chance to tell them about you and your ideas on how you can contribute to the company.
Most job seekers approach the big corporations, and thus the larger companies receive many unsolicited applications. It is often a good idea to also focus on small- and medium-sized businesses so you are competing with fewer applicants.