Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dong trinh java snippets" » "cong trinh java snippets", "dong tinh java snippets", "dong tranh java snippets"
"dung trinh tu snippets" » "dung tinh tu snippets", "cong trinh tu snippets", "dung trong tu snippets", "dung trinh ky snippets", "dung trinh do snippets"

Try widening your search to All Fields.

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

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