Perhaps you should try some spelling variations:
"luan tinh java slippers" » "quan tinh java slippers", "luan kinh java slippers", "luan sinh java slippers", "luan trinh java slippers", "luan think java slippers", "luan tinh va slippers", "luan tinh java slippery", "luan 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"

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