Perhaps you should try some spelling variations:
change roberto » chang roberto, change robert, echandi roberto
new action » new nation
wang liang » wang yang
new anion » new union, new nation, new asian
roberto b » robert b, roberto n, roberto f
tan yong » tan hong, tan kong, tan yang
a times » _ times, a time, bad times

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: ((tan yong) OR (wang liang)) a times ((new anion) OR (new action)) change roberto b ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tan yong) or (wang liang)) a times ((new anion) OR (new action)) change roberto b ;~".
• Adding a wildcard symbol may retrieve word variants: ((tan yong) or (wang liang)) a times ((new anion) OR (new action)) change roberto b ;*.