Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khao tuan do snippets" » "khai tuan do snippets", "khao luan do snippets", "khau luan do snippets", "khao toan do snippets", "khao truan doi snippets", "khao quan doi 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: (((("khao tuan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khao tuan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khao tuan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khao tuan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.