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