Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"dong chi dan slippers" » "dong cho dan slippers", "dong thi dan slippers", "dung chi dan slippers", "dong choi dan slippers", "dong chi van slippers", "dong chi dan slippery", "dong chi 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 chi 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 chi dan slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong chi dan slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong chi dan slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.