Perhaps you should try some spelling variations:
"dong tham dat slippers" » "dong tam dat slippers", "hong tham dat slippers", "dong thap dat slippers", "dong pham dat slippers", "dong tham dam slippers", "dong thanh dat slippers", "dong tham dat slippery", "dong tham dat 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 tham dat 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 tham dat slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong tham dat slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong tham dat slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.