Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"duong van do snippets" » "duong van code snippets", "duong va do snippets", "luong va do snippets", "dang van do snippets", "duong van dao snippets", "duong van de snippets", "duong van du 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 do 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 do snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( duong van do snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("duong van do snippets"))) or ("locating bug core snippets"))*.