Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong cua tot snippets" » "cong cu tot snippets", "dong cua tot snippets", "huong cua tot snippets", "cong cua mot snippets", "cong cua toi snippets", "cong ca tot 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 cua tot 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 cua tot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong cua tot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong cua tot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.