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