Perhaps you should try some spelling variations:
"dong gian lang slippers" » "duong gian lang slippers", "don gian lang slippers", "dong giao lang slippers", "dong gian dan slippers", "dong gian lang slippery", "dong gian lang 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: (((("dong gian lang slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dong gian lang slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong gian lang slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong gian lang slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.