Perhaps you should try some spelling variations:
"tang luat tu snippets" » "tang luan tu snippets", "nang suat tu snippets", "hang luan tu snippets", "tang luat tuc snippets", "tang luat thu snippets", "tang luat du snippets", "tang luat tu slippers"
"dung java java snippets" » "dung va java snippets", "dung java java slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("tang luat tu snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tang luat tu snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tang luat tu snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tang luat tu snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.