Perhaps you should try some spelling variations:
training costs » trading costs, training courses, training course
risk training » risk taking, bank training, risk planning
dong skin » dong sin, dong bin, dof skin
hong shu » cong shu, tong shui, wong shiu
wan yan » wang yan, nan yan, wai yan
kai a » kai fa, ka a

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((wan yan) or (dong skin)) kai a risk training costs ((hong shu) or (hong seo)) ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wan yan) OR (dong skin)) kai a risk training costs ((hong shu) OR (hong seo)) ;.
• Adding a wildcard symbol may retrieve word variants: ((wan yan) or (dong skin)) kai a risk training costs ((hong shu) or (hong seo)) ;*.