Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"nen tranh di snippets" » "nen thanh di snippets", "nen tang di snippets", "can tranh di snippets", "nen trinh di snippets", "nen tranh cai snippets", "nen tranh dau 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: (((("nen tranh di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("nen tranh di snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( nen tranh di snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("nen tranh di snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.