Perhaps you should try some spelling variations:
"duong cham hoi snippets" » "duong cam hoi snippets", "duong ham hoi snippets", "phuong cham hoi snippets", "duong cham voi snippets", "duong cham h'roi snippets", "duong pham hoai 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: (((("duong cham hoi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duong cham hoi snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duong cham hoi snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duong cham hoi snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.