Perhaps you should try some spelling variations:
"dong mua trinh slippers" » "dong qua trinh slippers", "dong xuan trinh slippers", "dong quy trinh slippers", "dong cua trinh slippers", "dong ma trinh slippers", "dong mua trinh slippery", "dong mua 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: (((("dong mua 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: (((("dong mua trinh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong mua trinh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong mua trinh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.