Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cho dai hoi snippets" » "cho dao hoi snippets", "co dai hoi snippets", "cho doi hoi snippets", "cho dai hoc snippets", "cho dai hai snippets", "cho dai 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 dai 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 dai hoi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cho dai hoi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cho dai hoi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.