Perhaps you should try some spelling variations:
prasidenten 4.1 » prasidenten der, patienten 4.1, prasidenten von
salmon farmers » salmon farms
yuan chang » yuan cheng, huang chang, han chang
lang yuan » fang yuan, wang yuhan, meng yuan
plan des » plan de, bilan des
plan du » plan de, plan fur

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

• If you are trying to use Boolean operators, they must be ALL CAPS: lang yuan chang ((plan des) OR (plan du)) prasidenten 4.1 ((salmon farmers) OR (among farmers)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "lang yuan chang ((plan des) OR (plan du)) prasidenten 4.1 ((salmon farmers) or (among farmers)) ;~".
• Adding a wildcard symbol may retrieve word variants: lang yuan chang ((plan des) OR (plan du)) prasidenten 4.1 ((salmon farmers) or (among farmers)) ;*.