Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khanh hoa ao snippets" » "thanh hoa ao snippets", "hang hoa ao snippets", "khanh hoa bao snippets", "khanh hoa am snippets", "khanh hoa co 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: (((("khanh hoa ao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khanh hoa ao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khanh hoa ao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khanh hoa ao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.