Perhaps you should try some spelling variations:
"trong hoach dat slippers" » "trong hach dat slippers", "trong hoat dat slippers", "trong doanh dat slippers", "trong hoach xay slippers", "trong hoc dat slippers", "trong hoach va slippers", "trong hoach dat slippery", "trong hoach 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: (((("dung java java snippets") or ("trong hoach dat slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("trong hoach dat slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( trong hoach dat slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("trong hoach dat slippers"))) or ("locating bug code snippets"))*.