Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"trau cua doc snippets" » "tru cua doc snippets", "tranh cua doc snippets", "tu cua doc snippets", "trau cua duoc snippets", "trau cua duc snippets", "trau 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: (((("trau 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: (((("trau cua doc snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( trau cua doc snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("trau cua doc snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.