Perhaps you should try some spelling variations:
"quan dinh cong snippets" » "xuan dinh cong snippets", "quan binh cong snippets", "quan tinh cong snippets", "quan dinh cuong snippets", "quan dinh hong snippets", "quan dinh long 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: (((("quan dinh cong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quan dinh cong snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quan dinh cong snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quan dinh cong snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.