Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"than hoc robot slippers" » "than cho robot slippers", "than so robot slippers", "than voi robot slippers", "toan hoc robot slippers", "thai hoc robot slippers", "than doc robot slippers", "than hoc robot slippery", "than hoc robot 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 ("than hoc robot slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("than hoc robot slippers"))) OR ("locating bug code snippets")).
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