Perhaps you should try some spelling variations:
"hanh trinh cac snippets" » "canh tranh cac snippets", "hanh chinh cac snippets", "hanh trinh cau snippets", "hanh trinh chat snippets", "hanh trinh chao snippets"
"dung dung code snippets" » "duong dung code snippets", "ung dung code snippets", "dung ung code snippets", "dung dung cong snippets", "dung dung co snippets", "dung dung de snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

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

• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"dung dung code snippets\") OR (\"hanh trinh cac snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( dung dung code snippets ) OR ( hanh trinh cac snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("dung dung code snippets") OR ("hanh trinh cac snippets"))) OR ("locating bug code snippets"))*.