Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chi cua toi snippets" » "chi cuc toi snippets", "khi cua toi snippets", "cuoi cua toi snippets", "chi cua hoi snippets", "chi cua moi snippets", "chi cua loai 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: (((("chi cua toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chi cua toi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chi cua toi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chi cua toi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.