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