Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"su han cua snippets" » "su hang cua snippets", "su nhan cua snippets", "su than cua snippets", "su phan cua snippets", "su hoan cua snippets", "su van 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: (((("su han 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: (((("su han cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( su han cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("su han cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.