Perhaps you should try some spelling variations:
"hang thuong cot snippets" » "hang thuong con snippets", "hang tong cot snippets", "hang thuong chi snippets", "nang thuong cot snippets", "dang thuong cot snippets", "hanh thuong cot 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: (((("hang thuong cot snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hang thuong cot snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hang thuong cot snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hang thuong cot snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.