Perhaps you should try some spelling variations:
cross mapping » crop mapping, class mapping, process mapping
mass loading » mass housing
yang iran » yang dean, yang fan
iran cost » urban cost, iran case, can cost
lang hua » wang hua, wang hui, dong hua
hua yang » hui yang, huang yang, hua jiang

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

• Performing a fuzzy search may retrieve terms with similar spellings: lang hua yang iran cost savings ((mass loading) or (cross mapping)) shu ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: lang hua yang iran cost savings ((mass loading) OR (cross mapping)) shu ;*.