Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi su cham snippets" » "khoi su pham snippets", "khoi tu cham snippets", "khoi vu cham snippets", "khoa su cham snippets", "hoi su cham snippets", "thoi su cham 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: (((("khoi su cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khoi su cham snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi su cham snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi su cham snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.