Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"phap cau doi snippets" » "phan cau doi snippets", "pha cau doi snippets", "phap ca doi snippets", "phap cau hoi snippets", "phap cau do snippets", "phap cau noi 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 cau doi 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 cau doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( phap cau doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("phap cau doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.