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