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