Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luc luong du snippets" » "duc luong du snippets", "luan luong du snippets", "quoc luong du snippets", "luc luong duc snippets", "luc luong duy snippets", "luc luong 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: (((("luc luong 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: (((("luc luong du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luc luong du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc luong du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.