Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"luan chi toc snippets" » "luan chi code snippets", "luan chi loc snippets", "luan thi toc snippets", "luan chi duoc snippets", "quan chi toc snippets", "lan chi toc 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: (((("luan chi toc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luan chi toc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( luan chi toc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan chi toc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.