Perhaps you should try some spelling variations:
"trung dai toc snippets" » "truong dai toc snippets", "truong dao toc snippets", "trung tam toc snippets", "trung dan toc snippets", "trung dai hoc snippets", "trung dai luoc 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"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("trung dai toc snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("trung dai toc snippets") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trung dai toc snippets ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trung dai toc snippets") or ("hang java java snippets"))) or ("locating bug code snippets"))*.