Perhaps you should try some spelling variations:
training course » training courses
training risk » trading risk, training crisis, defining risk
total credit » formal credit, rural credit
wang yang » wang yan, wang liang, wang yanling
lang yan » wang yan, zhang yan, yang yang
y total » _ total, a total, 2 total

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

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