Perhaps you should try some spelling variations:
achse » sachse (Expand Search)
sachsen » ssachsen (Expand Search)
sachen » lachen (Expand Search), aachen (Expand Search), machen (Expand Search)
ssachen » slachen (Expand Search), saachen (Expand Search), smachen (Expand Search), sprachen (Expand Search), ursachen (Expand Search)
sachten » machten (Expand Search), trachten (Expand Search), nachten (Expand Search), sachen (Expand Search), sachsen (Expand Search)
sachte » nachte (Expand Search), sache (Expand Search), sachse (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: operation (achse OR ((sachen OR (sachsen OR sachten)) OR (ssachen OR (sachte OR sachsa))))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "operation (achse OR ((sachen OR (sachsen OR sachten)) OR (ssachen OR (sachte OR sachsa))))".
• Adding a wildcard symbol may retrieve word variants: operation (achse OR ((sachen OR (sachsen OR sachten)) OR (ssachen OR (sachte OR sachsa))))*.