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