Perhaps you should try some spelling variations:
"do quang dat slippers" » "do quang dai slippers", "do quang dam slippers", "do quang phat slippers", "vu quang dat slippers", "le quang dat slippers", "ly quang dat slippers", "do quang dat slippery", "do quang 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: (((("do quang 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: (((("do quang dat slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( do quang dat slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("do quang dat slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.