Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tri trinh le snippets" » "tra trinh le snippets", "thi trinh le snippets", "tri tinh le snippets", "tri trinh ly snippets", "tri trinh he snippets", "tri 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: (((("tri 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: (((("tri trinh le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tri trinh le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tri trinh le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.