Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"duoc moi ke snippets" » "duoc hoi ke snippets", "duoc noi ke snippets", "duoc tuoi ke snippets", "duoc moi ve snippets", "duoc mot ke 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 moi ke 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 moi ke snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( duoc moi ke snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("duoc moi ke snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.