Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong cac ve snippets" » "cuong cac ve snippets", "cong tac ve snippets", "cong cau ve snippets", "cong cac he snippets", "cong cac vi snippets", "cong cac ke 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 cac ve 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 cac ve snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong cac ve snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong cac ve snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.