Perhaps you should try some spelling variations:
teaching echandi » teaching change, teaching china, teaching anti
echandi roberto » chang roberto
time last » time list, time past, time lost
time loss » time gross
roberto n » robert _, robert e, robert j
dan yang » daun yang, tan yang, wang yang
yang jui » yang judy, yang di, yang xi

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

• If you are trying to use Boolean operators, they must be ALL CAPS: dan yang jui ((time last) OR (time loss)) teaching echandi roberto n ;~.
• Adding a wildcard symbol may retrieve word variants: dan yang jui ((time last) or (time loss)) teaching echandi roberto n ;*.