Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"den cuu noi snippets" » "dinh cuu noi snippets", "dien cuc noi snippets", "dien cua noi snippets", "den cau noi snippets", "den cuu hoi snippets", "den cuu voi 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: (((("den cuu noi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("den cuu noi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( den cuu noi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("den cuu noi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.