Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chua xi toan snippets" » "chua xe toan snippets", "chuan bi toan snippets", "chua noi toan snippets", "chua vi toan snippets", "chua bai toan snippets", "chua nin 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: (((("chua xi 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: (((("chua xi toan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chua xi toan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chua xi toan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.