Perhaps you should try some spelling variations:
"duong hoa chat snippets" » "duong khoa chat snippets", "dong hoa chat snippets", "duong hoi chat snippets", "duong hop chat snippets", "duong hoa phan snippets"
"hang java java snippets" » "hang 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: (((("duong hoa chat snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duong hoa chat snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong hoa chat snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong hoa chat snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.