Perhaps you should try some spelling variations:
"danh phuc cham snippets" » "danh phuc code snippets", "hanh phuc cham snippets", "danh thuc cham snippets", "dinh phuc cham snippets", "danh phuc cam snippets", "danh phuc chau snippets", "danh thuc pham snippets"
"locating bug core snippets" » "locating bug code snippets"
"dung java java snippets" » "dung va java 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 phuc cham snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("danh phuc cham snippets") OR ("dung java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( danh phuc cham snippets ) or ( dung java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("danh phuc cham snippets") or ("dung java java snippets"))) or ("locating bug core snippets"))*.