Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong duc cao snippets" » "cong suc cao snippets", "hong duc cao snippets", "cong dac cao snippets", "cong duc dao snippets", "cong doc cao snippets", "cong duc bao 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 duc cao 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 duc cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong duc cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong duc cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.