Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khap su doc snippets" » "phap su doc snippets", "thap su doc snippets", "khat sua doc snippets", "khap nu doc snippets", "khap su doi snippets", "khap su hoc 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: (((("khap su 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: (((("khap su doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khap su doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khap su doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.