Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"gian lan dan slippers" » "gian lang dan slippers", "gian dan dan slippers", "giang van dan slippers", "gian ban dan slippers", "gian van dan slippers", "gian lan dau slippers", "gian lan dan slippery", "gian lan dan grippers"
"locating bug code snippets" » "locating bung code snippets", "locating bugs code snippets", "locating bug core 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: (((("gian lan dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("gian lan dan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
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• Adding a wildcard symbol may retrieve word variants: (((("gian lan dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.