Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong chu do snippets" » "cong chuc do snippets", "cong chua do snippets", "cong cu do snippets", "cong cau do snippets", "cong khu do snippets", "cong chu de 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: (((("cong chu do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cong chu do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong chu do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong chu do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.