Perhaps you should try some spelling variations:
doing assuring » pigging assuring
assuring data » ensuring data, assessing data, acquiring data
yang yang » wang yang, wang yan
data base » data based
yin hang » yin fang, yin yang, ying chang
fang wei » wang wei, zhang wei, liang wei
yang we » wang wei, yang jie, yang yue

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((yang yang) or (yin hang)) ((yang we) OR (fang wei)) start doing assuring data base ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((yang yang) OR (yin hang)) ((yang we) OR (fang wei)) start doing assuring data base ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((yang yang) or (yin hang)) ((yang we) OR (fang wei)) start doing assuring data base ;*".