Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van cac hoat snippets" » "van cao hoat snippets", "van cac hat snippets", "van cac khoan snippets", "van hac hoat snippets", "van cau hoat snippets", "van bac hoat 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 cac hoat 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 cac hoat snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van cac hoat snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van cac hoat snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.