または => or N4
…たりしたら/しては => ... Such as N3
Demonstrate by example
[頂「いただ」]く => Received N4
Give and take advice
~たいしたことはない => trivial,not amounting to much N1
Emphasize the negative meaning
たものではない => Impossible N2
Evaluate
…はずではなかった => cannot be (impossible) N3
Surprised
て[頂「いただ」]く => Do for N4
Give and take advice
くなかった => Past negative of A-い N5
Conjugate verbs
たいした ... ではない => not ... considerable; great; important; significant; a big deal N2
Emphasis on degree
ではなかったか => Wasn't it ...? N4
Exclamatory
ではなかったか => Wasn't it? N4
Speculation
ていただく => to have someone do something (humble) N4
Benefit