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