Perhaps you should try some spelling variations:
"thanh tai hoe snippets" » "thanh hai hoe snippets", "thanh toan hoe snippets", "doanh tai hoe snippets", "thanh tai he snippets", "thanh tai khoa snippets", "thanh thai hoc 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: (((("thanh tai hoe snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thanh tai hoe snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thanh tai hoe snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thanh tai hoe snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.