Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"xon cong cua snippets" » "bon cong cua snippets", "son cong cua snippets", "von cong cua snippets", "xon cong cu snippets", "xon dong cua snippets", "xon huong cua 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: (((("xon cong cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("xon cong cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( xon cong cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("xon cong cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.