Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi can chi snippets" » "khoa can chi snippets", "khoi nang chi snippets", "hoc can chi snippets", "khoi can thi snippets", "khoi van chi snippets", "khoi san chi 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 can chi 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 can chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi can chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi can chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.