Is there anything from back home that you wish you had in Japan?
What do you miss the most in Japan?
Is there anything you would also like to have in Japan that you used to have back home?
back home 母国で
Is there anything ~? 何かありますか?
What do you miss the most? (なくて)一番寂しいものは何ですか?
you wish you had in Japan. 日本にあったらいいなと(あなたが)思う
「こんなものあったらいいな」という文章は
Would you like to have something like this? 「こうのようなもの、いかがですか」
Do you wish you had something like this in Japan? 「日本でこういうもの、あったらいいなと思いますか」