Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban tre du snippets" » "ben tre du snippets", "ban tro du snippets", "benh tre du snippets", "ban te du snippets", "ban tre 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: (((("ban tre 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: (((("ban tre du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban tre du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban tre du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.