Perhaps you should try some spelling variations:
"using java java snippets" » "using data java snippets"
"tong minh java slippers" » "thong minh java slippers", "trong minh java slippers", "song minh java slippers", "tong trinh java slippers", "tong minh va slippers", "tong minh java slippery", "tong minh java grippers"
"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: (((("tong minh 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: (((("tong minh java slippers") OR ("using java java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tong minh java slippers ) or ( using java java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tong minh java slippers") or ("using java java snippets"))) or ("locating bug code snippets"))*.