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