Perhaps you should try some spelling variations:
"using java code snippets" » "using data code snippets", "using java core snippets"
"hoi trinh thuc slippers" » "hoi trinh tu slippers", "hoi trinh thi slippers", "hoi tinh thuc slippers", "doi trinh thuc slippers", "hoc trinh thuc slippers", "hoi trinh thuc slippery", "hoi trinh thuc 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 ("hoi trinh thuc slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("using java code snippets") OR ("hoi trinh thuc slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( using java code snippets ) or ( hoi trinh thuc slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("using java code snippets") or ("hoi trinh thuc slippers"))) or ("locating bug code snippets"))*.