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