Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"trinh dung luan slippers" » "trinh dung quan slippers", "trinh dung lan slippers", "trinh dung luan slippery", "trinh dung luan grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("trinh dung luan slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trinh dung luan slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trinh dung luan slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trinh dung luan slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.