Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"han dum cua snippets" » "han du cua snippets", "hat dum cua snippets", "phan duc cua snippets", "han duy cua snippets", "han dam cua snippets", "han dung cua 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: (((("han dum cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("han dum cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( han dum cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("han dum cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.