Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua chi doan snippets" » "cua chi dan snippets", "cua thi doan snippets", "cua chi toan snippets", "cua chu doan snippets", "ca chi doan snippets", "cua cha doan 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: (((("cua chi doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua chi doan snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua chi doan snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua chi doan snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.