Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"luc chat cao snippets" » "luc chat code snippets", "luc nhat cao snippets", "luu chat cao snippets", "muc chat cao snippets", "luc chat co snippets", "luc chat cho snippets", "luc chat bao 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: (((("luc chat cao snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luc chat cao snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( luc chat cao snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luc chat cao snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.