Perhaps you should try some spelling variations:
wang wang » wang yang, wang liang, wang yan
wang ling » wang liang, wang jing, wang ning
bond sara » bond sale
bond data » beyond data, board data, round data
der bank » der banken
big bank » big banks, big bang
li best » i best, als best, cio best

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang wang ling li best ((der bank) or (big bank)) ((bond sara) OR (bond data)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang wang ling li best ((der bank) OR (big bank)) ((bond sara) OR (bond data)) ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang wang ling li best ((der bank) or (big bank)) ((bond sara) OR (bond data)) ;*".