Perhaps you should try some spelling variations:
"locating bug core snippets" » "locating bug code snippets"
"dung chat doc snippets" » "dung chat code snippets", "dung nhat doc snippets", "luong chat doc snippets", "dung cho doc snippets", "dung chat hoc snippets", "dung chau doc snippets", "dung thuat doc snippets"
"hang java java snippets" » "hang va java 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: (((("dung chat doc snippets") or ("hang java java snippets"))) or ("locating bug core snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung chat doc snippets") OR ("hang java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung chat doc snippets ) or ( hang java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung chat doc snippets") or ("hang java java snippets"))) or ("locating bug core snippets"))*.