Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban doat hon snippets" » "ban dat hon snippets", "ban doanh hon snippets", "ban dan hon snippets", "ban dua hon snippets", "ban hoat ho snippets", "ban luat 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 doat 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 doat hon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban doat hon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban doat hon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.