Perhaps you should try some spelling variations:
"hanh thanh cac snippets" » "nhanh thanh cac snippets", "thanh thanh cac snippets", "khanh thanh cac snippets", "hanh hanh cac snippets", "hanh thanh bac snippets", "hanh thanh ca 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: (((("hanh thanh cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hanh thanh cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hanh thanh cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hanh thanh cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.