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