Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat giao do snippets" » "dan giao do snippets", "dat gia do snippets", "dai giao do snippets", "dat giac do snippets", "dat giao o 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: (((("dat giao 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: (((("dat giao do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat giao do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat giao do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.