Perhaps you should try some spelling variations:
"doi tinh java slippers" » "doi trinh java slippers", "doi think java slippers", "doi tinh va slippers", "hoi tinh java slippers", "don tinh java slippers", "doi tinh java slippery", "doi tinh java grippers"
"hang java java snippets" » "hang va java snippets"
"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.

• If you are trying to use Boolean operators, they must be ALL CAPS: (((("doi tinh java slippers") OR ("hang java java snippets"))) OR ("locating bug code snippets"))~.
• Removing quotes may allow a broader search: (((( doi tinh java slippers ) or ( hang java java snippets ))) or ( locating bug code snippets ))~.
• Adding a wildcard symbol may retrieve word variants: (((("doi tinh java slippers") or ("hang java java snippets"))) or ("locating bug code snippets"))*.