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