Perhaps you should try some spelling variations:
data basis » data bases, data based, data base
data asia » data basic, data anin, fta asia
some hope » hope hope, some open
20 human » 2 human, 10 human, 2011 human
yang yao » yang yang, wang yan, yang yi
hope tan » hong tan, hope a
yang ka » yang fan
g 20 » _ 20

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

• Performing a fuzzy search may retrieve terms with similar spellings: ((((yang yao) or (yang ka))) or (yang di))g 20 human ((data asia) OR (data basis)) some hope tan ;~.
• If you are trying to use Boolean operators, they must be ALL CAPS: ((((yang yao) OR (yang ka))) OR (yang di))g 20 human ((data asia) OR (data basis)) some hope tan ;*.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((yang yao) or (yang ka))) or (yang di))g 20 human ((data asia) OR (data basis)) some hope tan ;*".