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