Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dia danh du snippets" » "dia ban du snippets", "gia dinh du snippets", "dia danh dau snippets", "dia danh tu snippets", "dia dinh du 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: (((("dia danh du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dia danh du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dia danh du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dia danh du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.