Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung van da snippets" » "dung van code snippets", "duong van da snippets", "dung va da snippets", "dang van da snippets", "dung van dao snippets", "dung van dau snippets", "dung van dan 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: (((("dung van da snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung van da snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung van da snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung van da snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.