Perhaps you should try some spelling variations:
teaching change » teaching chinese, teaching chapter, teaching china
device context » service context, services context, device concepts
change robert » change roberto, chase robert, chang roberto
die context » does context, sme context, agile context
tan ying » fan ying, tan yang, tan yong
ran ying » fan ying, jin ying, gao ying
robert i » robert _, robert e, robert j

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tan ying) OR (ran ying)) vi ((die context) or (device context)) teaching change robert i ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tan ying) OR (ran ying)) vi ((die context) OR (device context)) teaching change robert i ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tan ying) OR (ran ying)) vi ((die context) or (device context)) teaching change robert i ;*".