Perhaps you should try some spelling variations:
stakes learning » studies learning, make learning, tasks learning
help stakes » help state
during dea » during data, during a, during new
yang yang » wang yang, wang yan
wang help » can help, wang he
yi yang » yin yang, yi gang, yu yang
dea bei » der bei, drag bei

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang yang) or (yi yang)) wang help stakes learning during dea bei ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (yi yang)) wang help stakes learning during dea bei ;*.