Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"ngu dung cac snippets" » "ngu cung cac snippets", "nguoi dung cac snippets", "ngoc dung cac snippets", "ngu luong cac snippets", "ngu dung cho snippets", "ngu dung tai 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: (((("ngu dung 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: (((("ngu dung cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( ngu dung cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("ngu dung cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.