Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van chu chat snippets" » "van chu chan snippets", "van cuu chat snippets", "van chu nhat snippets", "van chi chat snippets", "van phu chat snippets", "van cau chat 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: (((("python using java snippets") or ("van chu chat snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("python using java snippets") OR ("van chu chat snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( python using java snippets ) or ( van chu chat snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("python using java snippets") or ("van chu chat snippets"))) or ("locating bug code snippets"))*.