Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoa ly de snippets" » "hoa ly de snippets", "khoa y de snippets", "khoan le de snippets", "khoa ly du snippets", "khoa ly ke snippets", "khoa ly ve 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: (((("khoa ly 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: (((("khoa ly de snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoa ly de snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoa ly de snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.