Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"mot doanh do snippets" » "mot thanh do snippets", "hoa doanh do snippets", "voi doanh do snippets", "mot doanh dao snippets", "mot doanh co snippets", "mot doan do 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 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: (((("mot doanh do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( mot doanh do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("mot doanh do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.