Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"using cd cong snippets" » "using cfd cong snippets", "using 3d cong snippets", "using c cong snippets", "using ca cong snippets", "using cua cong snippets", "using cac cong snippets"
"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: (((("using cd cong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using cd cong snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using cd cong snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using cd cong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.