https://www.business-standard.com/podcast/current-affairs/why-is-the-indian-market-a-hard-nut-to-crack-for-foreign-retailers-122052300066_1.html
Why is the Indian market a hard nut to crack for foreign retailers?
Metro AG decided to exit India after 19 years. Is Indian market a hard nut to crack for international retail giants? Or India's business model is tilted in...
a hard nut to crack
https://pmc.ncbi.nlm.nih.gov/articles/PMC5504984/
World Health Organization, radiofrequency radiation and health - a hard nut to crack (Review) - PMC
In May 2011 the International Agency for Research on Cancer (IARC) evaluated cancer risks from radiofrequency (RF) radiation. Human epidemiological studies...
a hard nut to crackworld health organization