Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"huu toan de snippets" » "huu tuan de snippets", "cuu toan de snippets", "huy toan de snippets", "huu toan du snippets", "huu toan ke snippets", "huu toan ve 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: (((("huu toan 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: (((("huu toan de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( huu toan de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("huu toan de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.