Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khac mo chon snippets" » "khac do chon snippets", "khac co chon snippets", "khai mo chon snippets", "khac mo cho snippets", "khac mo phong 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 mo chon 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 mo chon snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khac mo chon snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khac mo chon snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.