Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tang cua doc snippets" » "mang cua doc snippets", "hang cua doc snippets", "tang luan doc snippets", "tang cua duoc snippets", "tang cua duc snippets", "tang cua hoc 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: (((("tang cua doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tang cua doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tang cua doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tang cua doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.