Perhaps you should try some spelling variations:
"cua cuc danh snippets" » "cua chuc danh snippets", "cua cum danh snippets", "cua cu danh snippets", "cua cac danh snippets", "cua duc danh snippets", "cua cuc danh slippers"
"python using a snippets" » "python using a 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: (((("cua cuc danh snippets") or ("python using a snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua cuc danh snippets") OR ("python using a snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua cuc danh snippets ) or ( python using a snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua cuc danh snippets") or ("python using a snippets"))) or ("locating bug code snippets"))*.