Perhaps you should try some spelling variations:
estimates using » estimation using
small estimates » small states, sharp estimates, summary estimates
ying yang » yang yang, yin yang, ying chang
using dem » using dea, using dhm, using deep
yu yang » yi yang, yu fang, yu gang
land a » land _, poland a

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