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