Perhaps you should try some spelling variations:
"locating bugs code slippers" » "locating bug code slippers", "locating bugs code snippets"
"python using java snippets" » "python using data snippets"
"vung doc va snippets" » "vung moc va snippets", "vung doi va snippets", "vung hoc va snippets", "vung duoc va snippets", "vung duc va 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: (((("python using java snippets") or ("vung doc va snippets"))) or ("locating bugs code slippers"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("vung doc va snippets"))) OR ("locating bugs code slippers")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( vung doc va snippets ))) or ( locating bugs code slippers )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("vung doc va snippets"))) or ("locating bugs code slippers"))*.