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