Perhaps you should try some spelling variations:
"dung quan trinh snippets" » "dung qua trinh snippets", "dung quan tinh snippets", "dung xuan trinh snippets", "dung quang trinh snippets", "dung luan trinh snippets", "luong quan trinh snippets"
"hang java java slippers" » "hang va java slippers", "hang java java slippery", "hang java java grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 quan trinh snippets") or ("hang java java slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung quan trinh snippets") OR ("hang java java slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung quan trinh snippets ) or ( hang java java slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung quan trinh snippets") or ("hang java java slippers"))) or ("locating bug code snippets"))*.