Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dan viet hoc snippets" » "dan viet code snippets", "danh viet hoc snippets", "san viet hoc snippets", "dao viet hoc snippets", "dan viet goc snippets", "dan triet hoc snippets", "dan nhiet hoc 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: (((("dan viet hoc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dan viet hoc snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dan viet hoc snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan viet hoc snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.