Perhaps you should try some spelling variations:
"dong cap trong slippers" » "dong cay trong slippers", "dong ca trong slippers", "dong cad trong slippers", "duong cap trong slippers", "dong cac trong slippers", "dong cao trong slippers", "dong cap trong slippery", "dong cap trong 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 cap trong 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 cap trong slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dong cap trong slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dong cap trong slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.