Perhaps you should try some spelling variations:
cation exchange » carbon exchange, carbon exchanges, ion exchange
new cation » new nation, new canton, new carbon
wang liang » wang yang
tan ying » fan ying, ran ying, tan yang
time new » times new, time now, some new
robert b » robert _, robert e, robert a
robert j » robert _, robert e

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 ying) OR (wang liang)) 3 time new cation exchange ((robert b) OR (robert j)) ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((tan ying) or (wang liang)) 3 time new cation exchange ((robert b) OR (robert j)) ;~".
• Adding a wildcard symbol may retrieve word variants: ((tan ying) or (wang liang)) 3 time new cation exchange ((robert b) OR (robert j)) ;*.