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