Perhaps you should try some spelling variations:
"tuong tac cham snippets" » "cong tac cham snippets", "luong tai cham snippets", "tuong lai cham snippets", "tuong tac pham snippets", "tuong toc cham snippets", "tuong tam cham 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: (((("tuong tac 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: (((("tuong tac cham snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tuong tac cham snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tuong tac cham snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.