Perhaps you should try some spelling variations:
"trinh cau code snippets" » "trinh chat code snippets", "trinh chao code snippets", "trinh tu code snippets", "trinh cau cong snippets", "trinh cau de snippets", "trinh cfd code snippets"
"dung dan cua snippets" » "dung dat cua snippets", "dung san cua snippets", "tung dan cua snippets", "dung dan ca snippets", "dung ban cua snippets", "dung dai cua 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: "((((\"trinh cau code snippets\") OR (\"dung dan cua snippets\"))) OR (\"locating bug code snippets\"))~".
• Removing quotes may allow a broader search: (((( trinh cau code snippets ) OR ( dung dan cua snippets ))) OR ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("trinh cau code snippets") OR ("dung dan cua snippets"))) OR ("locating bug code snippets"))*.