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