Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tim hanh le snippets" » "tiem hanh le snippets", "kim thanh le snippets", "tien hanh le snippets", "tim thanh le snippets", "tim hanh ve snippets", "tim hanh de 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: (((("tim hanh 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: (((("tim hanh le snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tim hanh le snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tim hanh le snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.