Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ban nhan de snippets" » "ban than de snippets", "van nhan de snippets", "ban thanh de snippets", "ban nhat de snippets", "ban nhan ve snippets", "ban nhan dieu 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: (((("ban nhan 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: (((("ban nhan de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ban nhan de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ban nhan de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.