Perhaps you should try some spelling variations:
small states » small scale
states using » states during, rates using, estimates using
taxes small » states small, cases small, waves small
china yang » china ying, china wang, china chang
using dem » using dea, using dhm, using deep
yu yang » du yang, yi yang, yu fang

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: ((china yang) OR (yu yang)) land taxes small states using dem bei ;~.
• Adding a wildcard symbol may retrieve word variants: ((china yang) or (yu yang)) land taxes small states using dem bei ;*.