Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"can van hoai snippets" » "can van thoai snippets", "can van hoa snippets", "can van hai snippets", "cac van hoai snippets", "can ban hoai snippets", "tan van hoai snippets"
"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: (((("can van hoai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("can van hoai snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( can van hoai snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("can van hoai snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.