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