Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi hoa don snippets" » "thi hoa don snippets", "chi hoa don snippets", "kha hoa don snippets", "khi hoa dong snippets", "khi hoa dan snippets", "khi hoa doi 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: (((("khi hoa don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khi hoa don snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi hoa don snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi hoa don snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.