Perhaps you should try some spelling variations:
"en sciences horst over" » "en sciences hors over", "les sciences horst over", "_ sciences horst over", "open science horst over", "en sciences horst ver"
"del presente con heat" » "el presente con heat", "y presente con heat", "del presente en heat", "del presente por heat", "del presente y heat"
"en laseres from new" » "en papers from new", "en cases from new", "en lapses from new", "en laseres from her", "en laseres from how", "en laseres from le"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("en sciences horst over") OR ("del presente con heat"))) OR ("en laseres from new"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"en sciences horst over\") OR (\"del presente con heat\"))) OR (\"en laseres from new\"))".
• Removing quotes may allow a broader search: (((( en sciences horst over ) OR ( del presente con heat ))) OR ( en laseres from new )).
• Adding a wildcard symbol may retrieve word variants: (((("en sciences horst over") OR ("del presente con heat"))) OR ("en laseres from new"))*.