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