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