Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khi day doc snippets" » "khi dai doc snippets", "khi gay doc snippets", "khi xay doc snippets", "khi day hoc snippets", "khi dat doc snippets", "khi duy doc 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 day doc 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 day doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khi day doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khi day doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.