Perhaps you should try some spelling variations:
"using java core snippets" » "using data core snippets"
"ghep doi cua snippets" » "ghep noi cua snippets", "ghep tuoi cua snippets", "gap doi cua snippets", "ghep hoi cua snippets", "ghep dai cua snippets", "ghep dong cua 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 ("ghep doi cua snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java core snippets") OR ("ghep doi cua snippets"))) OR ("locating bug code snippets")).
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