Perhaps you should try some spelling variations:
training costs » trading costs, training courses, training course
training risk » trading risk, training crisis, defining risk
equal credit » dual credit, equity credit, rural credit
y equal » _ equal, 6 equal, e equals
yan y » yang y, yan _, yan 4
wang » wing, wan, lang

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

• Performing a fuzzy search may retrieve terms with similar spellings: wang yan y equal credit ((training risk) OR (training costs)) hong seo ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wang yan y equal credit ((training risk) OR (training costs)) hong seo ;".
• Adding a wildcard symbol may retrieve word variants: wang yan y equal credit ((training risk) OR (training costs)) hong seo ;*.