Perhaps you should try some spelling variations:
"articles and nuclear optical" » "articles and nuclear option", "articles and nuclear medical", "articles and nonlinear optical"
"article and nuclear physics" » "article and nuclear physical"
"articles and nuclear physics" » "articles and nuclear physical"

Try widening your search to All Fields.

You may be able to get more results by adjusting your search query.

• If you are trying to use Boolean operators, they must be ALL CAPS: (("article and nuclear physics") OR ((("articles and nuclear physics") OR ("articles and nuclear optical")))).
• Removing quotes may allow a broader search: (( article and nuclear physics ) or ((( articles and nuclear physics ) or ( articles and nuclear optical )))).
• Adding a wildcard symbol may retrieve word variants: (("article and nuclear physics") or ((("articles and nuclear physics") or ("articles and nuclear optical"))))*.