Maybe you will have a better chance with your query if you correct it (you say Hans Harder born 1742 marries Bodil Sophie Kleist in 1743). Also it seems you are actually interested in Nikolay Christian Harder born 1752 in Norway, and you only happened to notice the same surname in Denmark? If Nikolay is your true interest, then research is needed in Norwegian records (and thus the Norway message board might help you better).
I did look through Ancestry.com family trees for Hans Harder, Bodil Sophie Kleist, Nikolay Christian Harder - and the trees are hopelessly snarled with impossible combinations (a mother giving birth at age 7 and so on). Probably best to start by posting all you know about Nikolay Christian Harder and work back from there to establish his parents, ancestors, and cousins.
If I could directly help you, I would. Maybe the suggestion can help a little.