Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"van thang java slippers" » "van thang va slippers", "van think java slippers", "van thanh java slippers", "van khang java slippers", "van hang java slippers", "van thang java slippery", "van thang java grippers"
"dung java java snippets" » "dung va java snippets"

Try widening your search to All Fields.

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung java java snippets") or ("van thang java slippers"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("van thang java slippers"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( van thang java slippers ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("van thang java slippers"))) or ("locating bugs code snippets"))*.