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

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((\"article and nuclear physical\") OR (\"articles and nuclear physical\"))".
• Removing quotes may allow a broader search: (( article and nuclear physical ) OR ( articles and nuclear physical )).
• Adding a wildcard symbol may retrieve word variants: (("article and nuclear physical") OR ("articles and nuclear physical"))*.