Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"cach tra du snippets" » "cach ta du snippets", "vach tran du snippets", "cac tro du snippets", "cach tra tu snippets", "cach tran duc snippets", "cach tran duy 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: (((("cach tra du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("cach tra du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( cach tra du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("cach tra du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.