Perhaps you should try some spelling variations:
"khuan diem a snippets" » "khuan kiem a snippets", "khuan viem a snippets", "khoa diem a snippets", "khuan diem ha snippets", "khuan diem e snippets", "khuan diem cau snippets", "khuan diem a slippers"
"python using java snippets" » "python using data snippets", "python using java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("khuan diem a snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khuan diem a snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khuan diem a snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khuan diem a snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.