Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van duoc dan slippers" » "van duc dan slippers", "vat duoc dan slippers", "tan duoc dan slippers", "van duoc ban slippers", "van duoc dai slippers", "van duoc dan slippery", "van duoc 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: (((("python using java snippets") or ("van duoc dan slippers"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("van duoc dan slippers"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( van duoc dan slippers ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("van duoc dan slippers"))) or ("locating bug code snippets"))*.