Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nhi den cua snippets" » "thai den cua snippets", "khi dien cua snippets", "nghi don cua snippets", "nhi dien cua snippets", "nhi de cua snippets", "nhi dan cua 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: (((("nhi den cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nhi den cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nhi den cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nhi den cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.