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