Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua ngu doan snippets" » "cua ngu dan snippets", "cua ngo doan snippets", "cua ngu van snippets", "cuu ngu doan snippets", "cua ndu doan snippets", "cua nguoi doan 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: (((("cua ngu doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua ngu doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua ngu doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua ngu doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.