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