Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phi duong di snippets" » "chi duong di snippets", "phi thuong di snippets", "thai duong di snippets", "phi duong dai snippets", "phi duong thi snippets", "phi 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: (((("phi 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: (((("phi duong di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phi duong di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phi duong di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.