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