Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"hai chat cua snippets" » "hai chau cua snippets", "phap chat cua snippets", "chai chet cua snippets", "hai nhat cua snippets", "hai chat va snippets", "hai chat huu 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: (((("hai chat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("hai chat cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( hai chat cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("hai chat cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.