Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thao van cao snippets" » "thai van cao snippets", "hao van cao snippets", "thanh van cao snippets", "thao van dao snippets", "thao van bao snippets", "thao van cau 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: (((("thao van 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: (((("thao van cao snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thao van cao snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thao van cao snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.