Perhaps you should try some spelling variations:
"cuon doanh chau snippets" » "cuon danh chau snippets", "cho doanh chau snippets", "von doanh chau snippets", "cuon doanh chu snippets", "cuon doanh nhan snippets", "cuon doanh thu snippets"
"dung java java snippets" » "dung va java snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("cuon doanh chau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cuon doanh chau snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cuon doanh chau snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cuon doanh chau snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.