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

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((tan kong) or (wang liang)) a times ((new anion) OR (new union)) change roberto b ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((tan kong) OR (wang liang)) a times ((new anion) OR (new union)) change roberto b ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tan kong) or (wang liang)) a times ((new anion) OR (new union)) change roberto b ;*".