Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duc hieu ca snippets" » "doc hieu ca snippets", "duc hien ca snippets", "thuc hieu ca snippets", "duc hieu cac snippets", "duc hieu cua snippets", "duc hieu va 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: (((("duc hieu ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc hieu ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duc hieu ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc hieu ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.