Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doan vi son snippets" » "doan va son snippets", "don vi son snippets", "doan thi son snippets", "doan vu son snippets", "doan vi con snippets", "doan vi san 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: (((("doan vi 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: (((("doan vi son snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doan vi son snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doan vi son snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.