Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"bui tan doan snippets" » "bui tran doan snippets", "bui tap doan snippets", "bui van doan snippets", "bui thanh doan snippets", "bui manh doan 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: (((("bui tan doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("bui tan doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( bui tan doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("bui tan doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.