Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc luat du snippets" » "duc luat du snippets", "duoc luan du snippets", "nuoc luat du snippets", "duoc luat dau snippets", "duoc luat su snippets", "duoc luat tu 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: (((("duoc luat du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("duoc luat du snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc luat du snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc luat du snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.