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