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