Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho doi hoi snippets" » "cho moi hoi snippets", "cuoc doi hoi snippets", "cho tuoi hoi snippets", "cho doi thoi snippets", "cho doi voi snippets", "cho doi moi 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: (((("cho doi hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cho doi hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho doi hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho doi hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.