Perhaps you should try some spelling variations:
mapping slam » mapping solar, mapping state, mapping black
rating care » rating case, framing care, taking care
hua credit » dual credit, a credit, du credit
dong yang » dong hoang, wang yang, yang yang
yang yao » yang yang, wang yan, yang yi
yao hua » ya hua

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

• Performing a fuzzy search may retrieve terms with similar spellings: dong yang yao hua credit ((rating care) or (rating scale)) mapping slam ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: dong yang yao hua credit ((rating care) OR (rating scale)) mapping slam ;.
• Adding a wildcard symbol may retrieve word variants: dong yang yao hua credit ((rating care) or (rating scale)) mapping slam ;*.