Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khanh hoa da snippets" » "thanh hoa da snippets", "hang hoa da snippets", "khanh hoa dan snippets", "khanh hoa dai snippets", "khanh hoa dam 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 da 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 da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khanh hoa da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khanh hoa da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.