Perhaps you should try some spelling variations:
anion channels » ion channels, ion channel, radio channels
anion change » anion exchange, union changes, carbon change
wang liang » wang yang
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 change) OR (anion channels)) roberto b ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tan yong) or (wang liang)) a times new ((anion change) OR (anion channels)) roberto b ;~".
• Adding a wildcard symbol may retrieve word variants: ((tan yong) or (wang liang)) a times new ((anion change) OR (anion channels)) roberto b ;*.