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