Perhaps you should try some spelling variations:
"tung tam chieu snippets" » "tung tim hieu snippets", "tung nam chien snippets", "tung thi chieu snippets", "trung tam chieu snippets", "vung tam chieu snippets", "dung tam chieu snippets"
"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: (((("tung tam chieu snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tung tam chieu snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tung tam chieu snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tung tam chieu snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.