Perhaps you should try some spelling variations:
"van trinh java snippets" » "van thinh java snippets", "van tinh java snippets", "dan trinh java snippets"
"dung rung core snippets" » "dung trung core snippets", "duong rung core snippets", "dung ung core snippets"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("van trinh java snippets") or ("dung rung core snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van trinh java snippets") OR ("dung rung core snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van trinh java snippets ) or ( dung rung core snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van trinh java snippets") or ("dung rung core snippets"))) or ("locating bug code snippets"))*.