"good explanation why" is a correct and usable expression in written English.
It can be used when referring to the explanation of why something is the way it is, or why a certain event has happened. For example, "She gave a good explanation why the project was delayed."
We don't have a good explanation why".
If Europe says no people will want a pretty good explanation why and frankly so will Our concerns are not outlandish or unreasonable.
I can find no good explanation why Sachiko Abe sits, like a human paper shredder in a pristine white dress, snipping tiny slivers of paper all day every day at the A Foundation gallery.
Karl Lagerfeld had one good Explanation why Princess Stephanie of Monaco, who spent her formative years in a mountaintop palace overlooking her family's principality, is now living in a trailer -- and traveling with a circus.
It's part of the culture to take care of the neighbors, help each other" ("At Plains' Small-Town Roxys, Volunteers Ride to the Rescue," front page, July 5) is a good explanation why Norman Rockwell's vision of America's small-town life ("America, Illustrated," Arts and Leisure, July 4) is so appealing in these hard times.
LinkedIn founder Konstantin Guericke has given a good explanation why the long awaited takover offer from his company doesn't come: It's just not necessary.
The attraction between phosphorus and framework aluminium and the formation of neutral SAPO interfaces are good explanations why phosphorus is a much more effective poison than Zn, Pt, and Ca. Protonation by Brønsted acid sites of C C bonds, C H bonds, or –OH groups in hydrocarbons and alcohols leads to the formation of carbonium, carbenium, or oxonium groups.
(Here's a good explanation of why).
And nobody has a good explanation for why.
Felix Salmon of Reuters has a good explanation of why this is a bad idea.
At least we have a good explanation for why that happened.
