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