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