Perhaps you should try some spelling variations:
"dung chao chao snippets" » "dung chao code snippets", "dung cho chao snippets", "dung chat chao snippets", "dung chau chao snippets", "dung cao chat snippets", "dung cao cho snippets", "dung chat cho snippets"
"locating bug core snippets" » "locating bug code 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 chao chao 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 chao chao snippets") OR ("hang java java snippets"))) OR ("locating bug core snippets")).
• Removing quotes may allow a broader search: (((( dung chao chao snippets ) or ( hang java java snippets ))) or ( locating bug core snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung chao chao snippets") or ("hang java java snippets"))) or ("locating bug core snippets"))*.