Perhaps you should try some spelling variations:
"locating bugs code snippets" » "locating bug code snippets"
"python using java snippets" » "python using data snippets"
"duc dan lon snippets" » "duoc dan lon snippets", "duc tan lon snippets", "duc dai lon snippets", "duc dan mon snippets", "duc dan bon snippets", "duc han lon snippets"

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: (((("duc dan lon snippets") or ("python using java snippets"))) or ("locating bugs code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duc dan lon snippets") OR ("python using java snippets"))) OR ("locating bugs code snippets")).
• Removing quotes may allow a broader search: (((( duc dan lon snippets ) or ( python using java snippets ))) or ( locating bugs code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duc dan lon snippets") or ("python using java snippets"))) or ("locating bugs code snippets"))*.