Perhaps you should try some spelling variations:
"dang java java snippets" » "dang va java snippets"
"tran quoc cong snippets" » "trung quoc cong snippets", "han quoc cong snippets", "tran duc cong snippets", "tran quoc cuong snippets", "tran nuoc cong snippets", "tran luoc cong 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: (((("dang java java snippets") or ("tran quoc cong snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang java java snippets") OR ("tran quoc cong snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang java java snippets ) or ( tran quoc cong snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang java java snippets") or ("tran quoc cong snippets"))) or ("locating bug code snippets"))*.