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