Perhaps you should try some spelling variations:
3.4 defects » 3.3 defects, 3.4 effects, 2.1 defects
changes jin » changes big, changes can, changes did
3.4 detect » 3.4 direct, 3.4 select, 3.4 detection
jin song » jie song, john song, kim song
song von » doing von, song jin, song min
wan yan » wang yan, nan yan, wai yan

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

• Performing a fuzzy search may retrieve terms with similar spellings: wan yan lankas ((3.4 detect) OR (3.4 defects)) changes jin song von ;~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "wan yan lankas ((3.4 detect) OR (3.4 defects)) changes jin song von ;".
• Adding a wildcard symbol may retrieve word variants: wan yan lankas ((3.4 detect) OR (3.4 defects)) changes jin song von ;*.