Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nang han du snippets" » "nang phan du snippets", "nang hang du snippets", "nang hanh du snippets", "nang han dau snippets", "nang van du snippets", "nang han tu 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: (((("nang han du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nang han du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nang han du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nang han du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.