I want to increase my apps downloads

Hi, I have published 2 apps to google play store i want to increase downloads, so can anyone help me, suggest some ideas to gain more installs. Here are links for my apps

https://play.google.com/store/apps/details?id=com.telerik.HireNWork

https://play.google.com/store/apps/details?id=com.scringo.gamesclubs