[General] insufficient amount

[roman.ryson]

Hi, I’m just joined this forum, and hope I’m writing in appropriate sub-forum.
I have a question about one expression in my motivation letter to the university:

“…During last year of work I noticed insufficient amount of international knowledge for my career development. As my job was connected with markets of foreign countries, I felt that I needed deeper understanding of international business culture, principles of a trading in a global market, international communication.”

I feel that expression insufficient amount is incorrect in this case, but I do not like everything I can create instead it.
Any ideas?
Thanks

 

[tedmc]

How about:

During my last year of working, I realised that my exposure to international business, an area which I sought for career development, was lacking/inadequate?

- a deeper understanding
- principles of trading (without "a") in a global market and international communication.