Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa hoi di snippets" » "khoan hoi di snippets", "khoa hoc di snippets", "khoa doi di snippets", "khoa hoi doi snippets", "khoa hoi dai snippets", "khoa hoi dia 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: (((("khoa hoi di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoa hoi di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoa hoi di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa hoi di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.