Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dat huu toan snippets" » "dat huu code snippets", "dat huu tuan snippets", "dat cuu toan snippets", "dat huy toan snippets", "dao huu toan snippets", "dai huu toan snippets", "dat hua toan snippets"
"python using java snippets" » "python using data 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: (((("dat huu toan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dat huu toan snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dat huu toan snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dat huu toan snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.