Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"thong lai so snippets" » "tuong lai so snippets", "thong tai so snippets", "thong bai so snippets", "thong dai so snippets", "thong lai su 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: (((("thong lai so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("thong lai so snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( thong lai so snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("thong lai so snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.