Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"duong van da snippets" » "duong van code snippets", "duong va da snippets", "luong va da snippets", "dang van da snippets", "duong van dao snippets", "duong van dau snippets", "duong van dan snippets"
"python using java snippets" » "python using data snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("python using java snippets") or ("duong van da snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("duong van da snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( duong van da snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("duong van da snippets"))) or ("locating bug core snippets"))*.