Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"than luan de snippets" » "nhan luan de snippets", "thai luan de snippets", "toan luan de snippets", "than luan den snippets", "than luan ve snippets", "than luat 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: (((("than luan de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("than luan de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( than luan de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("than luan de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.