Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"van nang chi snippets" » "van quang chi snippets", "van ban chi snippets", "van dong chi snippets", "van nang chiu snippets", "van nang cai snippets", "van nang cho 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 nang chi 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 nang chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( van nang chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("van nang chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.