Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngoc chu da snippets" » "ngoc chau da snippets", "ngoc thu da snippets", "ngoc ha da snippets", "ngoc chu de snippets", "ngoc cuu da snippets", "ngoc phu da 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: (((("ngoc chu da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("ngoc chu da snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngoc chu da snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngoc chu da snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.