Perhaps you should try some spelling variations:
"dong trieu dat slippers" » "dong trieu dai slippers", "dong trieu suat slippers", "dong trieu lit slippers", "cong trieu dat slippers", "dong trieu dat slippery", "dong trieu 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 trieu 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 trieu dat slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong trieu dat slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong trieu dat slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.