Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"chung vu cham snippets" » "chung cu cham snippets", "chung tu cham snippets", "chung vi cham snippets", "chung va cham snippets", "chung vu kham 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: (((("chung vu cham snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chung vu cham snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chung vu cham snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chung vu cham snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.