Perhaps you should try some spelling variations:
small states » small scale
states using » states during, rates using, estimates using
ying yang » yang yang, yin yang, ying chang
tax small » a small, can small, gap small
using dea » using dem, using dna, using delta
land tax » land taxes
yu yang » du yang, yi yang, yu gang
yu fang » yu gang, yu wang, yin fang
dea bei » der bei, drag bei

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: ((ying yang) OR (((yu yang) OR (yu fang)))) land tax small states using dea bei ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((ying yang) or (((yu yang) OR (yu fang)))) land tax small states using dea bei ;~".
• Adding a wildcard symbol may retrieve word variants: ((ying yang) or (((yu yang) OR (yu fang)))) land tax small states using dea bei ;*.