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