Perhaps you should try some spelling variations:
"dang may code snippets" » "mang may code snippets", "dang xay code snippets", "dung may code snippets", "dang may che snippets", "dang may cong snippets", "dang may cd snippets"
"dung vat de snippets" » "dung va de snippets", "dong vat de snippets", "dung dat de snippets", "dung vat da snippets", "dung vat dien snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code 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: (((("dang may code snippets") or ("dung vat de snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang may code snippets") OR ("dung vat de snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang may code snippets ) or ( dung vat de snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang may code snippets") or ("dung vat de snippets"))) or ("locating bug code snippets"))*.