Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khau doan do snippets" » "khau dan do snippets", "khu doan do snippets", "chan doan do snippets", "khau doan o snippets", "khau toan do snippets", "khau doanh dao 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: (((("khau doan 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: (((("khau doan do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khau doan do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khau doan do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.