Perhaps you should try some spelling variations:
"lan thiet java slippers" » "lan think java slippers", "luan thiet java slippers", "dan thiet java slippers", "can thiet java slippers", "lan thiet java slippery", "lan thiet 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: (((("lan thiet 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: (((("lan thiet java slippers") OR ("hang java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( lan thiet java slippers ) or ( hang java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("lan thiet java slippers") or ("hang java java snippets"))) or ("locating bug code snippets"))*.