Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phan luat ca snippets" » "phap luat ca snippets", "phan xuat ca snippets", "phan lap ca snippets", "phan luat cac snippets", "phan luat can snippets", "phan luat cau 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 luat ca 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 luat ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phan luat ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phan luat ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.