Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cuong cac me snippets" » "luong cac me snippets", "cong cac me snippets", "trong cac me snippets", "cuong cac he snippets", "cuong cac ke snippets", "cuong cac le 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: (((("cuong cac me snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cuong cac me snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuong cac me snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuong cac me snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.