Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"than duc da snippets" » "tran duc da snippets", "phan duc da snippets", "than doc da snippets", "than duc dai snippets", "than duc dao snippets", "than duc dam 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: (((("than duc da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("than duc da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( than duc da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("than duc da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.