Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tac bao toan snippets" » "tac bai toan snippets", "tac bao ton snippets", "tac bao thang snippets", "thac bao toan snippets", "tai bao toan snippets", "tat bao toan 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: (((("tac bao toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tac bao toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tac bao toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tac bao toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.