Perhaps you should try some spelling variations:
"nhan using java snippets" » "nhan sinh java snippets", "nhan ung java snippets", "nhan using data snippets"
"dang cong che snippets" » "dung cong che snippets", "dang cong cho snippets", "dang cong chi snippets", "dang cong chu 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 cong che snippets") or ("nhan using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("dang cong che snippets") OR ("nhan using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dang cong che snippets ) or ( nhan using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dang cong che snippets") or ("nhan using java snippets"))) or ("locating bug code snippets"))*.