Perhaps you should try some spelling variations:
wang liang » wang yang
soil using » soils using, mail using, soil testing
using long » using congo, using low, going long
qian wang » yiqian wang, qian rong, qian yan
yan wang » yuan wang, yang yang, yan liang
long arm » long term
dan l1 » dan la
dan l » adan l, dan la, dan z

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((yan wang) or (qian wang))) or (wang liang)) ((dan l1) OR (dan l)) gene soil using long arm ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((yan wang) OR (qian wang))) OR (wang liang)) ((dan l1) OR (dan l)) gene soil using long arm ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((yan wang) or (qian wang))) or (wang liang)) ((dan l1) OR (dan l)) gene soil using long arm ;*".