Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dan viet hoa snippets" » "dan viet code snippets", "danh viet hoa snippets", "san viet hoa snippets", "dao viet hoa snippets", "dan viet hoan snippets", "dan viet khoa snippets", "dan viet ha 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 hoa snippets") OR ("python using java snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"dan viet hoa snippets\") OR (\"python using java snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( dan viet hoa snippets ) OR ( python using java snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dan viet hoa snippets") OR ("python using java snippets"))) OR ("locating bug core snippets"))*.