Perhaps you should try some spelling variations:
"cuc duc cong snippets" » "cuc duc code snippets", "cuc duc cuong snippets", "cuc dung cong snippets", "cuc nuoc cong snippets", "cuc du cong snippets", "cua duc cong snippets", "nuoc duc cong snippets"
"locating bug core snippets" » "locating bug code snippets"
"python using java snippets" » "python using data 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: (((("python using java snippets") or ("cuc duc cong snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("cuc duc cong snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( cuc duc cong snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("cuc duc cong snippets"))) or ("locating bug core snippets"))*.