Add spaces: Decidebetweenafewpiecesandmany.

Answer: Decide between a few pieces and many.

Add spaces: AhighlightwasthelecturebyvicarRolfSteffensenon"Theunusedkey"abouttheoverlookedpsychologicaldefensesHamsunusesnottofeeltheparentsdisregardsandtheinfluenceofthisdisregardonhisworks.

Answer: A highlight was the lecture by vicar Rolf Steffensen on "The unused key" about the overlooked psychological defenses Hamsun uses not to feel the parents disregards and the influence of this disregard on his works.

Add spaces: 30Thenshalltheybegintosaytothemountains,Fallonus;andtothehills,Coverus.

Answer:
30 Then shall they begin to say to the mountains, Fall on us; and to the hills, Cover us.