Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoi duong ve snippets" » "hoai duong ve snippets", "hai duong ve snippets", "boi duong ve snippets", "hoi duong va snippets", "hoi duong vien snippets", "hoi duong van 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 duong ve 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 duong ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoi duong ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoi duong ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.