Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mot doanh de snippets" » "mot thanh de snippets", "hoa doanh de snippets", "voi doanh de snippets", "mot doanh dao snippets", "mot doanh ket snippets", "mot doanh va 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: (((("mot doanh de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("mot doanh de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mot doanh de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mot doanh de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.