Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"luan pho can snippets" » "luan phong can snippets", "luan phan can snippets", "luan khoa can snippets", "luan cho can snippets", "luan pho cap snippets", "luan pho cam 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: (((("luan pho can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luan pho can snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luan pho can snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luan pho can snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.