Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"doi duong di snippets" » "doi tuong di snippets", "boi duong di snippets", "dai duong di snippets", "doi duong dai snippets", "doi duong thi snippets", "doi duong loi 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: (((("doi duong di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi duong di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( doi duong di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("doi duong di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.