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