Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi su doi snippets" » "khoi sua doi snippets", "khoi su dai snippets", "khoi tu doi snippets", "khoa su doi snippets", "hoi su doi snippets", "thoi su 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: (((("khoi su 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: (((("khoi su doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi su doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi su doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.