Perhaps you should try some spelling variations:
credit ratings » credit rating
credit lasting » credit rating, credit granting, create lasting
mapping based » mapping land, mapping buyer, mapping phase
mapping shu » mapping snn, mapping safe, mapping slam
dong nan » dong yang, dong sin, dong bin
nan jan » nan yan, chan jan
jan de » van de, aan de

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

• Performing a fuzzy search may retrieve terms with similar spellings: dong nan jan de ((credit lasting) OR (credit ratings)) career ((mapping shu) or (mapping based)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong nan jan de ((credit lasting) OR (credit ratings)) career ((mapping shu) OR (mapping based)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "dong nan jan de ((credit lasting) OR (credit ratings)) career ((mapping shu) or (mapping based)) ;".
• Adding a wildcard symbol may retrieve word variants: dong nan jan de ((credit lasting) OR (credit ratings)) career ((mapping shu) or (mapping based)) ;*.