Perhaps you should try some spelling variations:
"hieu lang va snippets" » "chieu sang va snippets", "hieu quang va snippets", "nhieu tang va snippets", "hieu lang van snippets", "hieu hang va snippets", "hieu lang ha snippets", "hieu lang va 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: (((("hieu lang va snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hieu lang va snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hieu lang va snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hieu lang va snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.