Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"duc than vo snippets" » "duc than code snippets", "duc thang vo snippets", "duc thanh vo snippets", "duc thuan vo snippets", "duc than va snippets", "duc than doc snippets", "duc than hoc 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: (((("duc than vo snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc than vo snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( duc than vo snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc than vo snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.