Perhaps you should try some spelling variations:
training course » training courses
training risk » trading risk, training visit, training cost
equal credit » dual credit, rural credit, total credit
wang yang » wang yan, wang liang, wang yanling
hong shu » hong seo, hong yu, wong sau
hong ghi » hong g, hong hai
y equal » _ equal
yang y » yang yi, yang d, yang y.c

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yang y equal credit ((training risk) or (training course)) ((hong shu) OR (hong ghi)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: wang yang y equal credit ((training risk) OR (training course)) ((hong shu) OR (hong ghi)) ;.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yang y equal credit ((training risk) or (training course)) ((hong shu) OR (hong ghi)) ;".
• Adding a wildcard symbol may retrieve word variants: wang yang y equal credit ((training risk) or (training course)) ((hong shu) OR (hong ghi)) ;*.