Perhaps you should try some spelling variations:
"dung trinh code snippets" » "dung tinh code snippets", "dong trinh code snippets", "cong trinh code snippets", "dung trinh cong snippets", "dung trinh co snippets", "dung trinh cad snippets"
"hang java java snippets" » "hang va java snippets"
"locating bug core snippets" » "locating bug code snippets"

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

• Performing a fuzzy search may retrieve terms with similar spellings: (((("dung trinh code snippets") OR ("hang java java snippets"))) OR ("locating bug core snippets"))~.
• The words AND, OR and NOT may confuse the search; try adding quotes: "((((\"dung trinh code snippets\") OR (\"hang java java snippets\"))) OR (\"locating bug core snippets\"))".
• Removing quotes may allow a broader search: (((( dung trinh code snippets ) OR ( hang java java snippets ))) OR ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung trinh code snippets") OR ("hang java java snippets"))) OR ("locating bug core snippets"))*.