Perhaps you should try some spelling variations:
"dung java java snippets" » "dung va java snippets"
"gan hang ca snippets" » "ngan hang ca snippets", "ban hang ca snippets", "van hang ca snippets", "gan hang va snippets", "gan nang cao snippets", "gan hang tai 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: (((("gan hang ca snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("gan hang ca snippets") OR ("dung java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( gan hang ca snippets ) or ( dung java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("gan hang ca snippets") or ("dung java java snippets"))) or ("locating bug code snippets"))*.