Perhaps you should try some spelling variations:
based planning » basin planning, based learning
land planning » road planning, dam planning
china tan » china top, china two, china taiwan
tan yang » dan yang, tan ying, tan yong
yang tin » yang jin, yang lin, yang jing
tin hong » tan hong, kia hong, thi hong

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: ((land planning) OR (based planning)) can china tan yang tin hong tan ;~.
• Adding a wildcard symbol may retrieve word variants: ((land planning) or (based planning)) can china tan yang tin hong tan ;*.