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