Perhaps you should try some spelling variations:
"viewegs schmelzbuch der technik" » "viewegs schmalenbach der technik"
"viewegs schulbuch der technik" » "viewegs schulbuchern der technik", "viewegs schulbuchs bei technik", "viewegs schulbuch und technik"

Try widening your search to All Fields.

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: "((\"viewegs schulbuch der technik\") OR (\"viewegs schmelzbuch der technik\"))".
• Removing quotes may allow a broader search: (( viewegs schulbuch der technik ) OR ( viewegs schmelzbuch der technik )).
• Adding a wildcard symbol may retrieve word variants: (("viewegs schulbuch der technik") OR ("viewegs schmelzbuch der technik"))*.