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