Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"moi danh du snippets" » "hoi danh du snippets", "mo danh du snippets", "moi dan du snippets", "moi danh dau snippets", "moi danh tu snippets", "moi 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: (((("moi 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: (((("moi danh du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( moi danh du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("moi danh du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.