Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van giai ca snippets" » "va giai ca snippets", "dan giai ca snippets", "van giao ca snippets", "van giai cac snippets", "van giai ma snippets", "van giai bai 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 giai ca 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 giai ca snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van giai ca snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van giai ca snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.