Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"cong co trinh slippers" » "cong co tranh slippers", "cong cong trinh slippers", "cong tao trinh slippers", "dong co trinh slippers", "cong cu trinh slippers", "cong so trinh slippers", "cong co trinh slippery", "cong co trinh 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: (((("cong co 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: (((("cong co trinh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cong co trinh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cong co trinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.