Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban tach hon snippets" » "ban mach hon snippets", "ban sach hon snippets", "ban thanh hon snippets", "ban cach hoan snippets", "ban tach dong snippets", "ban tam hon 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 tach hon 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 tach hon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban tach hon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban tach hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.