Perhaps you should try some spelling variations:
"van hieu java snippets" » "van hieu va snippets", "cao hieu java snippets"
"trinh java java slippers" » "trinh java java slippery", "trinh java java grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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 hieu java snippets") or ("trinh java java slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van hieu java snippets") OR ("trinh java java slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van hieu java snippets ) or ( trinh java java slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van hieu java snippets") or ("trinh java java slippers"))) or ("locating bug code snippets"))*.