Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khac duoi ca snippets" » "khac tuoi ca snippets", "khac di ca snippets", "khac do ca snippets", "khac doi ca snippets", "khac cuoi cua snippets", "khac nuoi cay 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 duoi ca 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 duoi ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khac duoi ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khac duoi ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.