Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khu luc cua snippets" » "khu vuc cua snippets", "thuy luc cua snippets", "khu phuc cua snippets", "khu luc chua snippets", "khu luc nua snippets", "khu tuc 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: (((("khu luc 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: (((("khu luc cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khu luc cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khu luc cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.