Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"minh ke doi snippets" » "minh ve doi snippets", "minh de doi snippets", "minh ky doi snippets", "minh ke do snippets", "minh te doi 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: (((("minh ke doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("minh ke doi snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( minh ke doi snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("minh ke doi snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.