Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"cong so robot slippers" » "cong cho robot slippers", "cong tao robot slippers", "cong voi robot slippers", "cong san robot slippers", "cong hoa robot slippers", "cong so robot slippery", "cong so robot 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 so robot 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 so robot slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong so robot slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong so robot slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.