Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hat chon cac snippets" » "chat chong cac snippets", "hat nhan cac snippets", "chat cho cac snippets", "hat cho cac snippets", "hat thong cac snippets", "hat hoc cac 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: (((("hat chon cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hat chon cac snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hat chon cac snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hat chon cac snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.