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