Perhaps you should try some spelling variations:
small farmers » small firms
union does » union die
wang yang » wang yan, wang liang, wang yanling
jie small » live small, wine small, one small
union dem » union die, union das
yang jie » yang jin, yang di, yang jui
yu yang » du yang, yi yang, yu fang

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: ((wang yang) or (yu yang)) yang jie small farmers ((union dem) OR (union does)) bei ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((wang yang) OR (yu yang)) yang jie small farmers ((union dem) OR (union does)) bei ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((wang yang) or (yu yang)) yang jie small farmers ((union dem) OR (union does)) bei ;*".