Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"com duoc cac snippets" » "co duoc cac snippets", "com duoi cac snippets", "hoa duoc cac snippets", "com cuoc cach snippets", "com duoc chat snippets", "com duong cac 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 duoc cac 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 duoc cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( com duoc cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("com duoc cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.