Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"dam hoc dan slippers" » "dai hoc dan slippers", "dan hoc dan slippers", "day hoc dan slippers", "dam hoc dan slippery", "dam hoc 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: (((("dam hoc 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: (((("dam hoc dan slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( dam hoc dan slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("dam hoc dan slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.