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