Perhaps you should try some spelling variations:
"cong co thuc snippets" » "dong co thuc snippets", "cong cu thuc snippets", "cong so thuc snippets", "cong do thuc snippets", "cong co thua snippets", "cong mo thuc snippets", "cong co thuc 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 co thuc 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 co thuc snippets") OR ("dung va java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong co thuc snippets ) or ( dung va java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong co thuc snippets") or ("dung va java snippets"))) or ("locating bug code snippets"))*.