Perhaps you should try some spelling variations:
"using java core snippets" » "using data core snippets"
"gioi toan cau snippets" » "gioi van cau snippets", "gioi tai cau snippets", "boi toan cau snippets", "gioi toan cao snippets", "gioi toan ban snippets", "gioi toan tap snippets"
"locating bug code 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 core snippets") or ("gioi toan cau snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java core snippets") OR ("gioi toan cau snippets"))) OR ("locating bug code snippets")).
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