Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khac gan lon snippets" » "khach san lon snippets", "khac duan lon snippets", "khac manh lon snippets", "khac gan len snippets", "khac han lon snippets", "khac gian elon 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: (((("khac gan lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("khac gan lon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khac gan lon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khac gan lon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.