Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"quy trinh le snippets" » "qua trinh le snippets", "quy dinh le snippets", "quy trinh ly snippets", "quy trinh he snippets", "quy trinh ve 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: (((("quy trinh le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("quy trinh le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( quy trinh le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("quy trinh le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.