Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chao thuy do snippets" » "cho thue do snippets", "ha thuy do snippets", "chao chu do snippets", "chao thuyet do snippets", "chao thay doi snippets", "chao thuat do 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: (((("chao thuy do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chao thuy do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chao thuy do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chao thuy do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.