Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"thi minh de snippets" » "chi minh de snippets", "thi hanh de snippets", "thi bich de snippets", "thi minh ve snippets", "thi sinh de snippets", "thi menh de 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: (((("thi minh de snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thi minh de snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thi minh de snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thi minh de snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.