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