Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"tin cuong cac snippets" » "tien cuong cac snippets", "tinh cuong cac snippets", "tan cuong cac snippets", "tin luong cac snippets", "tin cong cac snippets", "tin trong cac snippets"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs code 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: (((("using java code snippets") or ("tin cuong cac snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("tin cuong cac snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("tin cuong cac snippets"))) or ("locating bug code snippets"))*.