Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cua dong che snippets" » "chua dong che snippets", "cua cong che snippets", "cua dang che snippets", "cua dong chen snippets", "cua duong che snippets", "cua dong cho 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: (((("cua dong che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cua dong che snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cua dong che snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cua dong che snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.