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