Perhaps you should try some spelling variations:
prasidenten 2.4 » prasidenten der, patienten 2.4, prasidenten von
des prasidenten » des patienten
among actors » among doctors, among acholi, among donors
2.4 among » 2.4.2 among, 2.15 among, 1.5 among
yao yang » yang yang
dan yang » daun yang, tan yang, wang yang
plan des » plan de, bilan des, plan du

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang ((yao yang) or (dan yang)) plan des prasidenten 2.4 among actors ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang ((yao yang) OR (dan yang)) plan des prasidenten 2.4 among actors ;*.