Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"tuat dac cho snippets" » "tuat dat cho snippets", "thuat dam cho snippets", "thuat dan cho snippets", "tuat day cho snippets", "tuat danh cho 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: (((("tuat dac cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("tuat dac cho snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( tuat dac cho snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("tuat dac cho snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.