Perhaps you should try some spelling variations:
"herein explored" » "herein explore" (Expand Search), "herein explores" (Expand Search)
"herein exploited" » "herein explicited" (Expand Search)
"herein exploit" » "herein explicit" (Expand Search)
"therein explains" » "wherein explains" (Expand Search), "therein explain" (Expand Search), "therein explained" (Expand Search)

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((((("herein exploited") OR ("herein explored"))) OR ("herein exploit"))) OR ("therein explains"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((((\"herein exploited\") OR (\"herein explored\"))) OR (\"herein exploit\"))) OR (\"therein explains\"))".
• Removing quotes may allow a broader search: (((((( herein exploited ) OR ( herein explored ))) OR ( herein exploit ))) OR ( therein explains )).
• Adding a wildcard symbol may retrieve word variants: (((((("herein exploited") OR ("herein explored"))) OR ("herein exploit"))) OR ("therein explains"))*.