Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong hay le snippets" » "cong ha le snippets", "cong xay le snippets", "cong hai le snippets", "cong huy le snippets", "cong hao 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: (((("cong hay 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 hay le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong hay le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong hay le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.