Perhaps you should try some spelling variations:
"am thuoc cuc snippets" » "am thuc cua snippets", "am thuoc co snippets", "am thuoc tu snippets", "nam thuoc cuc snippets", "lam thuoc cuc snippets", "am thuc cuc 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: (((("am thuoc cuc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("am thuoc cuc snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( am thuoc cuc snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("am thuoc cuc snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.