Perhaps you should try some spelling variations:
"construction technologies" » "construction technology", "construction techniques", "conversion technologies"
"destruction technologies" » "detection technologies", "extraction technologies", "disruption technologies"

Try widening your search to All Fields.

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