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