Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cong hai cho snippets" » "cong thai cho snippets", "cong ha cho snippets", "hoang hai cho snippets", "cong han cho snippets", "cong hoi cho snippets", "cong lai cho 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 hai cho 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 hai cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong hai cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong hai cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.