Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khat ca cao snippets" » "khat ha cao snippets", "hat ca cao snippets", "nhat cua cao snippets", "khat ca dao snippets", "khat cu cao snippets", "khat ca cac 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: (((("khat ca 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: (((("khat ca cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khat ca cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khat ca cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.