Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hoang tu van slippers" » "hoang thu van slippers", "hoang vu van slippers", "hoang tuan van slippers", "hoang tu va slippers", "hoang tu van slippery", "hoang tu 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: (((("hoang tu 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: (((("hoang tu van slippers") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hoang tu van slippers ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hoang tu van slippers") or ("python using java snippets"))) or ("locating bug code snippets"))*.