Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thuc khoa du snippets" » "hoc khoa du snippets", "chua khoa du snippets", "thuc ha du snippets", "thuc khoa dr snippets", "thuc hoa du snippets", "thuc khoa de 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: (((("thuc khoa 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: (((("thuc khoa du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thuc khoa du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thuc khoa du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.