Perhaps you should try some spelling variations:
sharing during » learning during, making during, sharing learning
yan umfang » a umfang
den umfang » der umfang, den umgang
during hoa » during coal, during load, during a
der care » elder care, ear care, air care
der case » per case, dar case, der cas
hoa secs » how secs
wang » wing, wan

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

• Performing a fuzzy search may retrieve terms with similar spellings: (wang or lang) ((yan umfang) or (den umfang)) ((der care) OR (der case)) sharing during hoa secs ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (wang OR lang) ((yan umfang) OR (den umfang)) ((der care) OR (der case)) sharing during hoa secs ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "(wang or lang) ((yan umfang) or (den umfang)) ((der care) OR (der case)) sharing during hoa secs ;*".