Perhaps you should try some spelling variations:
"hang java java snippets" » "hang va java snippets"
"tinh toan cao snippets" » "tinh toan ban snippets", "tinh toan tap snippets", "trinh toan cao snippets", "dinh toan cao snippets", "minh toan cao 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: (((("tinh toan cao snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tinh toan cao snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tinh toan cao snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tinh toan cao snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.