Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van xuat de snippets" » "san xuat de snippets", "va xuat de snippets", "phan xuat de snippets", "van luat de snippets", "van xuat dien snippets", "van thuat de 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: (((("python using java snippets") or ("van xuat de snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("van xuat de snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( van xuat de snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("van xuat de snippets"))) or ("locating bug code snippets"))*.