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