Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets", "locating bugs code slippers"
"duong van code snippets" » "duong va code snippets", "luong va code snippets", "dang van code snippets", "duong van de snippets", "duong van hoe snippets", "duong van cong snippets", "duong van code slippers"
"dung data code snippets" » "dung dat code snippets", "dung dan code snippets", "dung dau code snippets", "dung rate code snippets", "dung data code slippers"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("duong van code snippets") or ("dung data code snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duong van code snippets") OR ("dung data code snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( duong van code snippets ) or ( dung data code snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong van code snippets") or ("dung data code snippets"))) or ("locating bugs code snippets"))*.