Perhaps you should try some spelling variations:
"truong anh trac slippers" » "trong anh trac slippers", "trung anh trac slippers", "truong thanh trac slippers", "truong sinh trac slippers", "truong anh tuan slippers", "truong anh thuc slippers", "truong anh trac slippery", "truong anh trac 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 ("truong anh trac slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dung java java snippets") OR ("truong anh trac slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dung java java snippets ) or ( truong anh trac slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dung java java snippets") or ("truong anh trac slippers"))) or ("locating bug code snippets"))*.