Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"peng thu do snippets" » "peng theu do snippets", "phong thu do snippets", "ung thu do snippets", "peng thuy do snippets", "peng khu do snippets", "peng tu 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: (((("peng thu 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: (((("peng thu do snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( peng thu do snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("peng thu do snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.