https://www.searchenginejournal.com/optimizing-for-hyphenated-words-what-to-expect/7298/
Like plural/ singular word forms, hyphenated terms also often pose a difficult SEO issues for us to solve - which version to use and optimize for:
optimizinghyphenatedwordsexpect
https://www.hachettebookgroup.com/titles/han-ren/the-hyphenated-life/9781538771860/?lens=balance
Hachette Book Group is a leading book publisher based in New York and a division of Hachette Livre, the third-largest publisher in the world.
hachette book grouphyphenatedlifehanren
https://moz.com/community/q/topic/8987/hyphenated-domain-names-spammy-or-not/?
Some say hyphenated domain names are "spammy". I have also noticed that Moz's On Page Keyword Tool does NOT recognize keywords in a non-hyphenated domain name....
domain nameshyphenatedspammyseoforum
https://www.uts.edu.au/about/faculties/science/mathematical-and-physical-sciences/research/chemistry/hyphenated-mass-spectrometry
UTS scientists apply advanced hyphenated mass spectrometry techniques for chemical profiling and molecular diagnostics.
university of technologymass spectrometryhyphenatedsydney