Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"khoi con coi snippets" » "khi con coi snippets", "khoe con coi snippets", "khoi can coi snippets", "khoi con chi snippets", "khoi con co snippets", "khoi con chim 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 con coi 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 con coi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( khoi con coi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("khoi con coi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.