Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van luc thi slippers" » "van loc thi slippers", "van duc thi slippers", "van lu thi slippers", "van luc tai slippers", "van luc thi slippery", "van luc thi 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 luc thi 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 luc thi slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van luc thi slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van luc thi slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.