Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"vung hoc chi snippets" » "dung hoc chi snippets", "vung moc chi snippets", "trung hoc chi snippets", "vung hoc chia snippets", "vung hoc cho snippets", "vung hoc chu 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: (((("python using java snippets") or ("vung hoc chi snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("vung hoc chi snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( vung hoc chi snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("vung hoc chi snippets"))) or ("locating bug code snippets"))*.