Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phap dau cu snippets" » "phan dau cu snippets", "phap day cu snippets", "pham dau cu snippets", "phap dau cua snippets", "phap dau tu snippets", "phap dau co 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: (((("phap dau cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("phap dau cu snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phap dau cu snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phap dau cu snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.