Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"son tinh cua snippets" » "so tinh cua snippets", "don tinh cua snippets", "son binh cua snippets", "son trinh cua snippets", "son sinh cua snippets", "son tinh chat 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: (((("son tinh 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: (((("son tinh cua snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( son tinh cua snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("son tinh cua snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.