Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dung o viet slippers" » "dung co viet slippers", "dung mo viet slippers", "dung so viet slippers", "dung hoc viet slippers", "dung o viet slippery", "dung o viet 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: (((("dung o viet slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung o viet slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung o viet slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung o viet slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.