From your pic, they are
Kindle Paperwhite guide (Russian version)
Kindle Paperwhite guide (Chinese version)
Daijisen (it is a Japanese to Japanese dictionary)
Xinhua dictionary (it is a Chinese to Chinese dictionary)
Xian Dai Han Yu Ci Dian (it is a Chinese to Chinese dictionary)
For the remaining three, I believe they are all Russian dictionary / Russian to other language dictionaries.
I think the language of these "books" have the correct language code.
Maybe you accidentally bought unwanted dictionaries?
