Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoc van hoan snippets" » "hoc van hoang snippets", "hoc van hoa snippets", "hoc van toan snippets", "hoc dan hoan snippets", "hoc va hoan snippets", "hoc vat hoan 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 ("hoc van hoan snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("hoc van hoan snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( hoc van hoan snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("hoc van hoan snippets"))) or ("locating bug code snippets"))*.