Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"danh dan hoi snippets" » "danh dan code snippets", "danh dau hoi snippets", "canh dan hoi snippets", "dang dan hoi snippets", "danh dan hoc snippets", "danh dai hoi snippets", "danh dang khoi 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: (((("danh dan 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: (((("danh dan hoi snippets") OR ("python using java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( danh dan hoi snippets ) or ( python using java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh dan hoi snippets") or ("python using java snippets"))) or ("locating bug core snippets"))*.