Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua loai can snippets" » "qua loi can snippets", "cua luat can snippets", "cua dai can snippets", "cua loai san snippets", "cua loai cay snippets", "cua loai ban 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 loai can 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 loai can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua loai can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua loai can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.