Perhaps you should try some spelling variations:
"duoc thanh cac snippets" » "duc thanh cac snippets", "cuoc thanh cac snippets", "doc thanh cac snippets", "duoc hanh cac snippets", "duoc thanh bac snippets", "duoc 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: (((("duoc 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: (((("duoc thanh cac snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc thanh cac snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc thanh cac snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.