Perhaps you should try some spelling variations:
training course » training courses
training risk » trading risk, training crisis, defining risk
dual credit » rural credit, deals credit, equal credit
yang dang » yang yang, yang guang, yang liang
dang y » dang ly, yang y
y dual » _ dual, a dual, 3 dual
hong » long

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

• Performing a fuzzy search may retrieve terms with similar spellings: yang dang y dual credit ((training risk) OR (training course)) hong seo ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "yang dang y dual credit ((training risk) OR (training course)) hong seo ;*".