Perhaps you should try some spelling variations:
"python using java snippets" » "python using data snippets"
"chet duoc lo snippets" » "che duoc lo snippets", "cho duoc lo snippets", "che quoc lo snippets", "chet duoc ly snippets", "chet duoc li snippets", "chet duoc co 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: (((("chet duoc lo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))~.
• If you are trying to use Boolean operators, they must be ALL CAPS: (((("chet duoc lo snippets") OR ("python using java snippets"))) OR ("locating bug code snippets")).
• Removing quotes may allow a broader search: (((( chet duoc lo snippets ) or ( python using java snippets ))) or ( locating bug code snippets )).
• Adding a wildcard symbol may retrieve word variants: (((("chet duoc lo snippets") or ("python using java snippets"))) or ("locating bug code snippets"))*.