Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"van canh tranh slippers" » "van anh tranh slippers", "van hanh tranh slippers", "van manh tranh slippers", "van canh trinh slippers", "van canh thanh slippers", "van canh tran slippers", "van canh tranh slippery", "van canh tranh grippers"
"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 canh 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 canh tranh slippers") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van canh tranh slippers ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van canh tranh slippers") or ("dung java java snippets"))) or ("locating bug code snippets"))*.