Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban doan do snippets" » "ban doanh do snippets", "ban dan do snippets", "ban soan do snippets", "ban doan o snippets", "ban toan do snippets", "ban doanh dao 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 doan do 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 doan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban doan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban doan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.