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