Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dat nhat moi snippets" » "dai nhat moi snippets", "dang nhat moi snippets", "xuat nhat moi snippets", "dat nha moi snippets", "dat nhat mpsi snippets", "dat nhap mon 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: (((("dat nhat moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dat nhat moi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dat nhat moi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat nhat moi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.