Perhaps you should try some spelling variations:
"luong java java snippets" » "luong va java snippets", "luong java java slippers"
"cong danh thi snippets" » "cuong danh thi snippets", "cong dan thi snippets", "cong thanh thi snippets", "cong danh thin snippets", "cong dinh thi snippets", "cong dang thi snippets", "cong danh thi slippers"
"locating bug code snippets" » "locating bug code slippers", "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: (((("luong java java snippets") or ("cong danh thi snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("luong java java snippets") OR ("cong danh thi snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( luong java java snippets ) or ( cong danh thi snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("luong java java snippets") or ("cong danh thi snippets"))) or ("locating bug code snippets"))*.