Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van tai dot snippets" » "von tai dot snippets", "van tuan dot snippets", "van tai mot snippets", "van tai dntn snippets", "van tai dong 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: (((("van tai dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("van tai dot snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van tai dot snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van tai dot snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.