Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban tai son snippets" » "van tai son snippets", "han tai son snippets", "ban thi son snippets", "ban thai son snippets", "ban tai san snippets", "ban tai so 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 tai son 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 tai son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban tai son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban tai son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.