Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"buoc van chi snippets" » "buoc ban chi snippets", "buoc vao chi snippets", "luoc van chi snippets", "buoc van chien snippets", "buoc luan chi snippets", "buoc van 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: (((("buoc van 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: (((("buoc van chi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( buoc van chi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("buoc van chi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.