Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khu san chi snippets" » "phu san chi snippets", "thu san chi snippets", "thuy san chi snippets", "khu van chi snippets", "khu luan chi snippets", "khu toan chi 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 san chi 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 san chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khu san chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khu san chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.