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