Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong phuc le snippets" » "cong thuc le snippets", "cong chuc le snippets", "cong phu le snippets", "cong phuc se snippets", "cong phuc liem snippets", "cong phuc lai 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 phuc le 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 phuc le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong phuc le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong phuc le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.