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