Perhaps you should try some spelling variations:
"dung trinh cham snippets" » "dung tinh cham snippets", "dong trinh cham snippets", "cong trinh cham snippets", "dung trinh chat snippets", "dung trinh chao snippets", "dung trinh han snippets", "dcung trinh cham snippets"
"ung dung code snippets" » "ung dung cong snippets", "ung dung co snippets", "ung dung de snippets", "cung dcung code snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

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