Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"dong ban tran slippers" » "dong bang tran slippers", "dong san tran slippers", "dong bac tran slippers", "dong ban trang slippers", "dong tan tran slippers", "dong ban than slippers", "dong ban tran slippery", "dong ban tran grippers"
"locating bug code snippets" » "locating bug core snippets", "locating bung code snippets", "locating bugs code snippets"

Try widening your search to All Fields.

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• Performing a fuzzy search may retrieve terms with similar spellings: (((("using java code snippets") or ("dong ban tran slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("dong ban tran slippers"))) OR ("locating bug code snippets")).
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