Perhaps you should try some spelling variations:
echandi roberto » chang roberto
anion echandi » anion exchange
wang liang » wang yang
new anion » new union, new action, new nation
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 echandi roberto b ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tan kong) OR (wang liang)) a times new anion echandi roberto b ;*".