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