Perhaps you should try some spelling variations:
planning spain » planning chain, planning gain, planning space
land planning » based planning, road planning, dam planning
tan ying » fan ying, ran ying, tan yong
tan yang » dan yang, tan yong, wang yang
tao yang » yao yang, xiao yang, dan yang
min hong » amin hong, tin hong, min hyoung

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 spain china ((tan ying) OR (((tan yang) OR (tao yang)))) min hong tan ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "land planning spain china ((tan ying) or (((tan yang) OR (tao yang)))) min hong tan ;~".
• Adding a wildcard symbol may retrieve word variants: land planning spain china ((tan ying) or (((tan yang) OR (tao yang)))) min hong tan ;*.