Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua khong do snippets" » "hua khong do snippets", "cua phuong do snippets", "cua thuong do snippets", "cua khong co snippets", "cua khong lo snippets", "cua khong de 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 khong do 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 khong do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua khong do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua khong do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.